michael sonoma county superior argued november decided march petitioner male charged violating california statutory rape law defines unlawful sexual intercourse act sexual intercourse accomplished female wife perpetrator female age years prior trial petitioner sought set aside information state federal constitutional grounds asserting statute unlawfully discriminated basis gender since men alone criminally liable thereunder trial california appeal denied relief review california upheld statute held judgment affirmed pp cal affirmed justice rehnquist joined chief justice burger justice stewart justice powell concluded statute violate equal protection clause fourteenth amendment pp classifications inherently suspect subject strict scrutiny upheld bear fair substantial relationship legitimate state ends reed reed equal protection clause demand statute necessarily apply equally persons require things different fact treated law though rinaldi yeager statute upheld gender classification invidious rather realistically reflects fact sexes similarly situated certain circumstances pp one purposes california statute state strong interest prevention illegitimate teenage pregnancies statute protects women sexual intercourse pregnancy age physical emotional psychological consequences particularly severe virtually significant harmful identifiable consequences teenage pregnancy fall female legislature acts well within authority elects punish participant nature suffers consequences conduct pp merit petitioner contention statute impermissibly underinclusive must order pass judicial scrutiny broadened hold female criminally liable male relevant inquiry whether statute drawn precisely might whether line chosen california legislature within constitutional limitations event statute frustrate state interest effective enforcement since female less likely report violations statute subject prosecution equal protection clause require legislature enact statute broad may well incapable enforcement pp statute impermissibly overbroad makes unlawful sexual intercourse prepubescent females incapable becoming pregnant aside fact statute justified grounds young females particularly susceptible physical injury sexual intercourse constitution require california legislature limit scope statute older teenagers exclude young girls statute unconstitutional applied petitioner like girl involved time sexual intercourse asserted ground statute presumes circumstances male culpable aggressor statute rest assumption instead attempt prevent illegitimate teenage pregnancy providing additional deterrent men age man irrelevant since young men capable older men inflicting harm sought prevented blackmun concluded california statutory rape law sufficiently reasoned constitutional effort control inception problem teenage pregnancies california judgment affirmed basis applicable test classifications set forth reed reed craig boren pp gregory jilka argued cause filed brief petitioner sandy kriegler deputy attorney general california argued cause respondent brief george deukmejian attorney general robert philibosian chief assistant attorney general clark moore assistant attorney general william pounders deputy attorney general briefs amici curiae urging reversal filed bruce ennis american civil liberties union et al john karr women legal defense fund solicitor general mccree assistant attorney general heymann sara criscitelli filed brief amicus curiae urging affirmance justice rehnquist announced judgment delivered opinion chief justice justice stewart justice powell joined question presented case whether california statutory rape law cal penal code ann west supp violates equal protection clause fourteenth amendment section defines unlawful sexual intercourse act sexual intercourse accomplished female wife perpetrator female age years statute thus makes men alone criminally liable act sexual intercourse july complaint filed municipal sonoma county alleging petitioner male unlawful sexual intercourse female age violation evidence adduced preliminary hearing showed approximately midnight june petitioner two friends approached sharon female sister waited bus stop petitioner sharon already drinking moved away others began kiss struck face rebuffing petitioner initial advances sharon submitted sexual intercourse petitioner prior trial petitioner sought set aside information state federal constitutional grounds asserting unlawfully discriminated basis gender trial california appeal denied petitioner request relief petitioner sought review california held section discriminates basis sex females may victims males may violate section cal subjected classification strict scrutiny stating must justified compelling state interest found classification supported mere social convention immutable physiological fact female exclusively become pregnant ibid canvassing tragic human costs illegitimate teenage pregnancies including large number teenage abortions increased medical risk associated teenage pregnancies social consequences teenage childbearing concluded state compelling interest preventing pregnancies males alone physiologically cause result law properly seeks avoid held gender classification readily justified means identifying offender victim reasons stated affirm judgment california evident opinions difficulty agreeing upon proper approach analysis cases involving challenges classifications issues posed challenges range issues standing see orr orr appropriate standard judicial review substantive classification unlike california held classifications inherently suspect thus apply strict scrutiny classifications see stanton stanton cases held however traditional minimum rationality test takes somewhat sharper focus classifications challenged see craig boren powell concurring reed reed example stated classification upheld bears fair substantial relationship legitimate state ends craig boren supra restated test require classification bear substantial relationship important governmental objectives underlying decisions principle legislature may make overbroad generalizations based sex entirely unrelated differences men women demean ability social status affected class parham hughes plurality opinion stewart equal protection clause demand statute necessarily apply equally persons require things different fact treated law though rinaldi yeager quoting tigner texas consistently upheld statutes gender classification invidious rather realistically reflects fact sexes similarly situated certain circumstances parham hughes supra califano webster schlesinger ballard kahn shevin stated legislature may provide special problems women weinberger wiesenfeld applying principles case fact california legislature criminalized act illicit sexual intercourse minor female sure indication intent purpose discourage conduct precisely legislature desired result course somewhat less clear long recognized nquiries congressional motives purposes hazardous matter palmer thompson search actual primary purpose statute likely elusive arlington heights metropolitan housing dev mcginnis royster example individual legislators may voted statute variety reasons legislators may concerned preventing teenage pregnancies others protecting young females physical injury loss chastity still others promoting various religious moral attitudes towards premarital sex justification statute offered state accepted california legislature sought prevent illegitimate teenage pregnancies finding course entitled great deference reitman mulkey although cases establish state asserted reason enactment statute may rejected goal legislation weinberger wiesenfeld supra case satisfied prevention illegitimate pregnancy least one purposes statute also state strong interest preventing pregnancy risk stating obvious teenage pregnancies increased dramatically last two decades significant social medical economic consequences mother child state particular concern state approximately half teenage pregnancies end abortion children born illegitimacy makes likely candidates become wards state need medical doctors discern young men young women similarly situated respect problems risks sexual intercourse women may become pregnant suffer disproportionately profound physical emotional psychological consequences sexual activity statute issue protects women sexual intercourse age consequences particularly severe question thus boils whether state may attack problem sexual intercourse teenage pregnancy directly prohibiting male sexual intercourse minor female hold statute sufficiently related state objectives pass constitutional muster virtually significant harmful inescapably identifiable consequences teenage pregnancy fall young female legislature acts well within authority elects punish participant nature suffers consequences conduct hardly unreasonable legislature acting protect minor females exclude punishment moreover risk pregnancy constitutes substantial deterrence young females similar natural sanctions deter males criminal sanction imposed solely males thus serves roughly equalize deterrents sexes unable accept petitioner contention statute impermissibly underinclusive must order pass judicial scrutiny broadened hold female criminally liable male argued statute necessary deter teenage pregnancy statute male female subject prosecution serve goal equally well relevant inquiry however whether statute drawn precisely might whether line chosen california legislature within constitutional limitations kahn shevin event say statute effective statute california chosen enact state persuasively contends statute frustrate interest effective enforcement view female surely less likely report violations statute subject criminal prosecution area already fraught prosecutorial difficulties decline hold equal protection clause requires legislature enact statute broad may well incapable enforcement similarly reject petitioner argument impermissibly overbroad makes unlawful sexual intercourse prepubescent females definition incapable becoming pregnant quite apart fact statute well justified grounds young females particularly susceptible physical injury sexual intercourse see rundlett oliver ludicrous suggest constitution requires california legislature limit scope rape statute older teenagers exclude young girls remains petitioner contention statute unconstitutional applied like sharon time sexual intercourse petitioner argues statute flawed presumes two persons male culpable aggressor find petitioner contentions unpersuasive contrary assertions statute rest assumption males generally aggressors instead attempt legislature prevent illegitimate teenage pregnancy providing additional deterrent men age man irrelevant since young men capable older men inflicting harm sought prevented upholding california statute also recognize case statute challenged grounds invidiously discriminates females contrary statute places burden males shared females find nothing suggest men past discrimination peculiar disadvantages need special solicitude courts case gender classification made solely administrative convenience frontiero richardson emphasis omitted rests baggage sexual stereotypes orr orr held statute instead reasonably reflects fact consequences sexual intercourse pregnancy fall heavily female male accordingly judgment california affirmed footnotes statute enacted part california first penal code cal ch recodified amended approximately one million became pregnant women age group pregnancies illegitimate illegitimacy rates teenagers births per unmarried females ages increased alan guttmacher institute million teenagers chilman adolescent sexuality changing american society nih pub risk maternal death higher teenager age women early twenties risk higher statistics show teenage mothers drop school face bleak economic future see million teenagers supra bennett bardon effects school program teenager mothers children orthopsychiatry teenage pregnancy motherhood orthopsychiatry teenagers disproportionately likely seek abortions center disease control abortion surveillance pp example teenagers california approximately abortions live births california center health statistics reproductive health status california teenage women mar policy intent california legislature evinced legislation buttresses view prevention teenage pregnancy purpose statute preamble pregnancy freedom choice act example legislature finds pregnancy among unmarried persons years age constitutes increasing social problem state california cal welf inst code ann west subsequent decision california legislature considered rejected proposals render gender neutral thereby ratifying judgment california enough answer petitioner contention statute accidental traditional way thinking females califano webster quoting califano goldfarb stevens concurring judgment certainly decision california legislature good source deciding current outmoded perception women although petitioner concedes state compelling interest preventing teenage pregnancy contends true purpose protect virtue chastity young women statute unjustifiable rests archaic stereotypes said enough dispose contention question us question federal constitution whether legislation violates equal protection clause fourteenth amendment whether supporters may endorsed reasons longer generally accepted even preservation female chastity one motives statute even motive impermissible petitioner argument must fail familiar practice constitutional law strike otherwise constitutional statute basis alleged illicit legislative motive orr orr example rejected one asserted purpose impermissible considered purposes determine justify statute similarly washington davis distinguished palmer thompson grounds purposes ordinance open impeachment evidence legislature actually motivated impermissible purpose see also arlington heights metropolitan housing dev mobile bolden stevens concurring judgment understand petitioner question state authority make sexual intercourse among teenagers criminal act least basis carey population services international plurality opinion brennan four members assumed purposes case state may regulate sexual behavior minors four members emphatically stated regulation permissible white concurring part concurring result powell concurring part concurring judgment stevens concurring part concurring judgment rehnquist dissenting long recognized state even broader authority protect physical mental moral youth adults see planned parenthood central mo danforth ginsberg new york prince massachusetts petitioner contends statute hinder prosecutions prosecutor take account relative burdens females males generally prosecute males concede concede prosecutor exercising discretion virtually always prosecute man woman see impermissible legislature enact statute effect question whether statute substantially related asserted goals best opaque one plausibly argued statute produce fewer prosecutions statute issue see stewart concurring post justice brennan dissent argues hand even assuming statute difficult enforce ommon sense suggests statutory rape law potentially greater deterrent sexual activity law simple reason law subjects men women criminal sanctions thus arguably deterrent effect twice many potential violators post emphasis deleted noted two three cases relied upon justice brennan dissent readily distinguishable instant one see post navedo preisser meloon helgemoe cert denied respective governments asserted purpose statute protect young women physical injury courts rejected justification grounds showing young females likely males suffer physical injury sexual intercourse held contrary decision pregnancy prevention plausible purpose legislation thus neither reached issue presented whether statute substantially related prevention teenage pregnancy significantly meloon severely limited rundlett oliver upheld statutory rape law ground state shown sexual intercourse physically injures young women males course even justice brennan dissent dispute young women suffer disproportionately deleterious consequences illegitimate pregnancy justice stewart concurring section face classifies basis sex male engages sexual intercourse underage female wife violates statute female engages sexual intercourse underage male husband petitioner contends state law punishes males conduct question violates fourteenth amendment right equal protection law today correctly rejects contention outset noted statutory discrimination viewed part wider scheme california law clearcut might first appear females freed criminal liability california engaging sexual activity may harmful unlawful example person either sex molest annoy contribute delinquency anyone years age persons prohibited committing lewd lascivious act including consensual intercourse child members sexes may convicted engaging deviant sexual acts anyone finally females may brought within proscription since female may charged aiding abetting violation section thus one part broad statutory scheme protects minors problems risks attendant upon adolescent sexual activity sure creates additional measure punishment males engage sexual intercourse females ages question whether constitution prohibits state legislature imposing additional sanction basis constitution violated government state federal invidiously classifies similarly situated people basis immutable characteristics born thus detrimental racial classifications government always violate constitution simple reason far constitution concerned people different races always similarly situated see fullilove klutznick dissenting opinion mclaughlin florida concurring opinion brown board plessy ferguson dissenting opinion contrast detrimental gender classifications government often violate constitution always reason differences males females constitution necessarily recognizes case deal basic differences females become pregnant result sexual intercourse males recognized parham hughes state free make overbroad generalizations based sex entirely unrelated differences men women demean ability social status affected class classifications may based upon administrative convenience upon archaic assumptions proper roles sexes craig boren frontiero richardson reed reed recognized certain narrow circumstances men women similarly situated circumstances gender classification based clear differences sexes invidious legislative classification realistically based upon differences unconstitutional see parham hughes supra califano webster schlesinger ballard cf san antonio independent school dist rodriguez concurring opinion classifications invariably invalid men women fact similarly situated area covered legislation question equal protection clause violated caban mohammed dissenting opinion applying principles classification enacted california legislature readily apparent violate equal protection clause young women men similarly situated respect problems risks associated intercourse pregnancy statute realistically related legitimate state purpose reducing problems risks california catalog shows pregnant unmarried female confronts problems numerous severe faced male partner alone endures medical risks pregnancy abortion suffers disproportionately social educational emotional consequences pregnancy recognizing disproportion california attempted protect teenage females prohibiting males participating act necessary conception fact males females similarly situated respect risks sexual intercourse applies force males older males risk pregnancy significant deterrent unwed young females shared unmarried males regardless age experienced observation confirms common sense notion adolescent males disregard possibility pregnancy far adolescent females extent may punish males intercourse prepubescent females punishment justifiable substantial physical risks prepubescent females shared male counterparts petitioner argues california legislature drafted statute differently purpose accomplished precisely issue course whether statute drafted wisely whether lines chosen egislature within constitutional limitations kahn shevin may decided attack problems broadly statutes mean every state constitutionally compelled short equal protection clause mean physiological differences men women must disregarded differences must never permitted become pretext invidious discrimination discrimination presented case constitution surely require state pretend demonstrable differences men women really exist see accompanying text infra see cal penal code ann west supp cal penal code ann west supp see people dontanville cal app cal rptr see cal penal code ann west supp see cal penal code ann west people haywood cal app dist people lewis cal app according statistics maintained california department justice bureau criminal statistics approximately juveniles arrested participation acts made unlawful females moreover underage female culpable male partner culpable may prosecuted juvenile delinquent cal welf inst code ann west supp gladys cal males females equally prohibited sexual intercourse minors compare cal penal code ann west supp cal penal code ann west supp noted children born girls california illegitimate born girls also observed accounting california pregnancies teenagers accounted legal abortions see ante also empirical evidence sexual abuse young females serious problem sexual abuse young males example review five studies found sexually abused minors female jaffe dynneson ten bensel sexual abuse children diseases children another study involving admissions hospital emergency room period reported children examined sexual abuse girls orr prietto emergency management sexually abused children diseased children see also state craig mont sarafino estimate nationwide incidence sexual offenses children child welfare teenage mothers finish high school disadvantaged economically thereafter see moore teenage childbirth welfare dependency family planning perspectives suicide rate teenage mothers seven times greater teenage girls without children nye parenthood state ext bull adolescent mothers aged welfare within two five years birth children teenage pregnancy everybody problem dhew publication hsa despite increased availability contraceptives sex education pregnancy rates young women increasing see alan guttmacher institute million teenagers see generally chilman adolescent sexuality changing american society nih pub petitioner contends statute overinclusive allow defense contraceptives used procreation reason impossible petitioner allege however used contraceptive pregnancy resulted conduct charged even assuming petitioner standing raise claim overbreadth clear statute recognizing defenses suggests encounter difficult impossible problems proof see teenage pregnancy motherhood orthopsychiatry see also state rundlett rundlett oliver see barnes state see generally orr prietto supra jaffee dynneson ten bensel supra chilman supra fact statute necessarily lead closer fit aim reducing problems associated teenage pregnancy parties equally liable prosecution female far less likely complain complaint accordingly possible statute result fewer prosecutions one us event state legislature free address believes serious aspect broader problem equal protection clause require state must choose attacking every aspect problem attacking problem dandridge williams see also williamson lee optical justice blackmun concurring judgment gratifying plurality recognizes risk stating obvious teenage pregnancies increased dramatically last two decades significant social medical economic consequences mother child state ante footnotes omitted times wondered whether capable perception particularly struggled different unrelated problems attend abortion issues see example opinions dissenting opinions beal doe maher roe poelker doe harris mcrae williams zbaraz today opinion matheson ante might conclude two uses criminal sanction flatly forbid intercourse order forestall teenage pregnancies matheson prohibit physician abortion procedure except upon notice parents pregnant minor vastly different proscriptions basic social privacy problems much utah statute matheson california statute case legislatively created tools intended achieve similar ends addressed societal concerns control direction young people sexual activities plurality opinion impliedly concedes much notes approximately half teenage pregnancies end abortion children born likely candidates become wards state ante however vote strike california statutory rape law think sufficiently reasoned constitutional effort control problem inception important difference state action state adamant rigid refusal face even recognize significant consequences woman forced unwanted conception found difficult rule constitutional example state efforts block later point woman attempt deal enormity problem confronting rejected state efforts prevent women rationally taking steps prevent problem arising see carey population services international see also griswold connecticut contrast persuaded although minor substantial privacy rights intimate affairs connected procreation california efforts prevent teenage pregnancy viewed differently utah efforts inhibit woman dealing pregnancy become inevitability craig boren opinion large part joined plurality opinion present case points ante respective phrasings applicable test reed reed craig boren vote affirm judgment california uphold state classification test exemplified two cases schlesinger ballard weinberger wiesenfeld kahn shevin note also california penal code one several california statutes intended protect juvenile justice stewart concurring opinion appropriately observes one part broad statutory scheme protects minors problems risks attendant upon adolescent sexual activity ante think fair respect particular petitioner point partner sharon appears unwilling participant least initial stages intimacies took place night june petitioner sharon nonacquaintance incident drinking withdrawal others group foreplay willingly participated seems encouraged closeness ages difference one year days factors make case unattractive one prosecute especially prosecute felony rather misdemeanor chargeable state chosen prosecute manner facts reluctantly conclude may fit crime sharon preliminary hearing testified follows deputy district attorney june approximately midnight midnight june rohnert park sharon yes sonoma county yes anything unusual happen night rohnert park yes briefly describe happened night see defendant night rohnert park yes first meet bus stop anyone sister anyone defendant yes many people defendant two met defendant happened walked railroad tracks happened railroad tracks drinking railroad tracks walked bush started kissing stuff kissing back first telling stop yes telling slow stop said okay okay kept kept sister two guys came sister said told get come home yes sister right david one boys started walking home stayed later right bruce left michael know michael defendant witness yeah laying kissing asked wanted walk park walked park sat bench started kissing laying bench told take pants said trying get hit back bench said forget let wanted took pants telling put legs around stuff sexual intercourse defendant yeah put penis vagina yes said hit yeah hit slugged face slug fist abouts face chin result bruises kind injury yeah happened bruises hit one time hit witness hit two three times course evening defendant ask age yeah tell sixteen tell sixteen yes said drinking correct yes describe condition result drinking little drunk app go away others yeah know guess wanted need go bathroom yes sister walked railroad tracks bushes went bathroom understand went bushes correct yes okay bushes kissing hugging sitting laying lying bushes yes far away rest bushes right next railroad tracks walked bushes far sister two boys came michael right yeah say remember sister say anything said come sharon let go home asked go home affirmative nod go home wanted stay know hit happened five minutes bruce stayed michael remember remember negative head shake occasion time kiss bruce yeah kissing bruce time affirmative nod bruce kissing yes standing time sitting okay point time left hugging kissing bruce right yeah sitting yes sister still yeah first standing michael david yes anything michael david think whose idea bruce kiss initiate yes happened bruce left michael asked wanted go walk park say said yes happened walked park long take get park ten fifteen minutes walk yes ever mention name yes disturbing find splintered case presents straightforward issue whether admittedly classification cal penal code ann west supp bears sufficient relationship state asserted goal preventing teenage pregnancies survive constitutional scrutiny mandated craig boren applying analytical framework provided precedents convinced one proper resolution issue classification must declared unconstitutional fear plurality opinion justices stewart blackmun reach opposite result placing much emphasis desirability achieving state asserted statutory goal prevention teenage pregnancy enough emphasis fundamental question whether discrimination california statute substantially related achievement goal ii uncertainty proper framework analyzing equal protection challenges statutes containing classifications see ante settled upon proposition statute containing classification withstand constitutional challenge unless classification substantially related achievement important governmental objective kirchberg feenstra ante wengler druggists mutual ins califano westcott caban mohammed orr orr califano goldfarb califano webster craig boren supra analysis applies whether classification discriminates males females caban mohammed supra orr orr supra craig boren supra burden government prove importance asserted objective substantial relationship classification objective see kirchberg feenstra ante wengler druggists mutual ins supra caban mohammed supra craig boren supra state meet burden without showing statute less effective means achieving goal wengler druggists mutual ins supra orr orr supra state california vigorously asserts important governmental objective served prevention teenage pregnancy claims statute furthers goal deterring sexual activity males class persons considers responsible causing pregnancies even assuming prevention teenage pregnancy important governmental objective fact objective see infra california still burden proving fewer teenage pregnancies statutory rape law law gender neutral meet burden state must show statutory rape law punishes males females effectively deters minor females sexual intercourse plurality assumes statute less effective deterring sexual activity statute create significant enforcement problems plurality thus accepts state assertion female surely less likely report violations statute subject criminal prosecution area already fraught prosecutorial difficulties decline hold equal protection clause requires legislature enact statute broad may well incapable enforcement ante footnotes omitted state produced evidence case moreover least two serious flaws state assertion law enforcement problems created statutory rape law make statute less effective statute deterring sexual activity first experience jurisdictions california belies plurality conclusion statutory rape law may well incapable enforcement least enacted statutory rape laws although laws protect young persons either sex sexual exploitation older individuals laws arizona florida illinois permit prosecution minor females minor males engaging mutual sexual conduct california introduced evidence handicapped enforcement problems plurality finds persuasive surely provide evidence might expect california introduced addition california legislature recent years revised sections penal code make example cal penal code ann west supp prohibiting sodomy oral copulation person years age cause two minor homosexuals subjected criminal sanctions engaging mutually consensual conduct state introduced evidence explain statutory rape law difficult enforce statutes second flaw state assertion even assuming statute difficult enforce state still shown enforcement problems make statute less effective statute deterring minor females engaging sexual intercourse common sense however suggests statutory rape law potentially greater deterrent sexual activity law simple reason law subjects men women criminal sanctions thus arguably deterrent effect twice many potential violators even fewer persons prosecuted law state suggests still true twice many persons subject arrest state failure prove law less effective deterrent law like state failure prove law difficult enforce led invalidate iii recently california commentator suggested purpose california statutory rape law protect young women risk pregnancy indeed historical development demonstrates law initially enacted premise young women contrast young men deemed legally incapable consenting act sexual intercourse chastity considered particularly precious young women felt uniquely need state protection contrast young men assumed capable making decisions law therefore offer special protection perhaps gender classification california statutory rape law initially designed outmoded sexual stereotypes rather reduce incidence teenage pregnancies state unable demonstrate substantial relationship classification newly asserted goal cf califano goldfarb stevens concurring judgment whatever reason state shown cal penal code effective law deterring minor females engaging sexual intercourse therefore met burden proving statutory classification substantially related achievement asserted goal hold violates equal protection clause fourteenth amendment reverse judgment california california acknowledged indeed parties dispute cal penal code ann west supp discriminates basis sex ante petitioner male faces criminal felony charges possible prison term female partner remains immune prosecution gender participants relative responsibility determines subject criminal sanctions california stated people hernandez cal omitted ven circumstances girl actual comprehension contradicts law presumption minor female innocent naive understand implications nature act male deemed criminally responsible act although young naive responding advances may made none three opinions upholding california statute fairly applies equal protection analysis carefully developed since craig boren plurality opinion example focusing obvious uncontested fact females become pregnant suggests statutory gender discrimination rather invidious actually ensures equality treatment since females subject risk pregnancy plurality opinion concludes criminal sanction imposed solely males serves roughly equalize deterrents sexes ante justice stewart adopts similar approach recognizing females become pregnant result sexual intercourse males justice stewart concludes oung women men similarly situated respect problems risks associated intercourse pregnancy therefore realistically related legitimate state purpose reducing problems risks emphasis added ante justice blackmun conceding limits must placed state power regulate control direction young people sexual activities also finds statute constitutional ante distinguishes state power abortion context pregnancy already occurred power present context problem inception concludes without explanation california statutory rape law sufficiently reasoned constitutional effort control problem inception ibid three approaches common failing overlook fact state met burden proving gender discrimination substantially related achievement state asserted statutory goal brethren seem recognize california burden proving statutory rape law less effective deterring sexual activity leading teenage pregnancy fail analyze issue terms believe reach unsupportable result statutory rape laws struck navedo preisser hicks meloon helgemoe cert denied precisely government failed meet burden proof remarkable display sexual stereotyping california stated legislature well within power imposing criminal sanctions males alone persons may physiologically cause result law properly seeks avoid cal emphasis original petitioner questioned state constitutional power achieve asserted objective criminalizing consensual sexual activity however note cases foreclose privacy challenge state attempting reduce incidence teenage pregnancy imposing criminal sanctions engage consensual sexual activity minor females stressed however right privacy means anything right individual married single free unwarranted governmental intrusion matters fundamentally affecting person decision whether bear beget child eisenstadt baird omitted see rev stat ann stat rev ch addition eight permit parties prosecuted one participants consensual act sexual intercourse age see stat ann mass laws ch west supp comp laws mont code ann rev stat supp code ann supp utah code ann supp stat tit supp logical reason contrast laws governing forcible rape statutory rape laws apply consensual sexual activity force element crime since woman consents act sexual intercourse unlikely report partner police whether subject criminal sanctions enforcement undermined statute made gender neutral see infra seems ineffective deterrent sexual activity cf carey population services international supra substantial reason doubt limiting access contraceptives substantially discourage early sexual behavior according statistics provided state average juvenile males adult males arrested statutory rape year brief respondent years approximately one million californian girls ages cal dept finance population projections california counties detail series although record case indicate incidence sexual intercourse involving girls period california state department health estimates almost pregnancies among girls cal dept health birth abortion records physician survey office abortions think fair speculate evidence comparison number arrests statutory rape california number acts sexual intercourse involving minor females state likely demonstrate male contemplating sexual activity minor female chances arrested reassuringly low seriously question therefore whether enforced substantial deterrent effect see craig boren stevens concurring california statutory rape law origins statutes westminster enacted reign edward close century edw ch edw ch age consent time years reduced years eliz ch statute part common law brought thus first california penal statute enacted contained provision cal ch proscribed sexual intercourse females age california statute amended make age consent cal ch age advanced cal ch fixed remains cal ch females generally reached puberty age inconceivable statute designed prevent pregnancy directed acts sexual intercourse females age legislative history available draftsmen notes penal code supports view purpose california statutory rape law protect young give consent draftsmen explained statutory rape provision embodies well settled rule existing law girl ten years age incapable giving consent act intercourse reduce grade rape code commissioners note subd following cal penal code ed mention whatever pregnancy prevention see also note forcible statutory rape exploration operation objectives consent standard yale past decisions california courts confirm law designed protect state young females uninformed decisionmaking people verdegreen cal example california stated obvious purpose statutory rape law protection society protecting violation virtue young unsophisticated girls insidious approach vile tampering persons primarily undermines virtue young girls eventually destroys prevention much principal act must undoubtedly intent legislature presumed innocent naive understand implications nature act law concern capacity lack thereof understand explained part popular conception social moral personal values preserved abstinence sexual indulgence part young woman unwise disposition sexual favor deemed harm social mores community conduct patterns established hence law statutory rape intervenes effort avoid disposition justice stevens dissenting local custom belief rather statutory laws venerable doubtful ancestry determine volume sexual activity among unmarried teenagers empirical evidence cited plurality demonstrates futility notion statutory prohibition significantly affect volume activity provide meaningful solution problems created nevertheless matter constitutional power unlike brother brennan see ante doubt validity state law prohibiting unmarried teenagers engaging sexual intercourse societal interests reducing incidence venereal disease teenage pregnancy sufficient judgment justify prohibition conduct increases risk harms conclusion nondiscriminatory prohibition constitutional help answer question whether prohibition applicable half joint participants conduct also valid true validity total ban adequate justification selective prohibition otherwise constitutional objection discriminatory rules meaningless question case whether difference males females justifies statutory discrimination based entirely sex fact immediately acknowledge capacity become pregnant primarily differentiates female male impeach validity plurality newly found wisdom think plurality quite correct making assumption joint act law seeks prohibit creates greater risk harm female male plurality surely believe risk pregnancy confronted female risk venereal disease confronted males well females provided effective deterrent voluntary female participation conduct yet plurality decision seems rest assumption california legislature acted basis rather fanciful notion judgment fact class persons especially vulnerable risk statute designed avoid reason making statute applicable class argument special need protection provides rational explanation exemption one simply comprehend case fact female confronts greater risk harm male reason applying prohibition reason granting license use judgment whether assume risk surely examine problem point view society interest preventing conduct occurring irrational exempt potential violators see dissent justice brennan ante view government interest parens patriae seeking protect subjects harming discrimination actually perverse rational parent making rules conduct twin children opposite sex simultaneously forbid son authorize daughter engage conduct especially harmful daughter effect statutory classification pregnancy special harm suffered one two participants prohibited act special harm doubt constitute legitimate mitigating factor deciding punishment might appropriate given case standpoint fashioning general preventive rule indeed determining appropriate punishment neither party fact suffered special harm regard total exemption members endangered class utterly irrational opinion acceptable justification general rule requiring disparate treatment two participants joint act must legislative judgment one guilty conduct statute designed prevent requires participation two persons one male one female many situations probably true one aggressor either unwilling least less willing participant joint act statute authorized punishment one participant required prosecutor prove participant aggressor assume discrimination valid although question less clear also assume purpose deciding case permissible punish male participant one element offense proof aggressor least respects responsible participant joint act statute issue case however requires proof question raised statute whether state consistently federal constitution may always punish male never female equally responsible female responsible two seem impartial lawmaker give one answer question fact california legislature decided apply prohibition male may reflect legislative judgment typical case male actually guilty party judgment must turn assume decision engage conduct always least typically male decision assumption valid statutory classification also valid support assumption contained record case legislative history scholarly study called attention think supported extent traditional attitudes toward relationships possibility habitual attitude may reflect nothing irrational prejudice makes insufficient justification discriminatory treatment otherwise blatantly unfair read statute requires one one two equally guilty wrongdoers stigmatized criminal conviction accept state argument constitutionality discriminatory rule saved assumption prosecutors commonly invoke statute cases actually involve forcible rape one established proof beyond reasonable doubt assumption implies state legitimate interest convicting defendant evidence constitutionally insufficient course state may create offense authorize punishment guilty party surely interest obtaining convictions inadequate proof justify statute punishes one equally less guilty partner find persuasive suggestion discrimination adequately justified desire encourage females inform male partners even concept wholesale informant exemption acceptable enforcement device justification defining exempt class entirely reference sex rather reference neutral criterion relative innocence indeed exempt class composed entirely members one sex support view statutory purpose better served granting informing license females rather males discarded male partner informs promiscuous female timely threat prosecution might well prevent precise harm statute intended minimize finally even logic faulty actually speculative basis treating equally guilty males females differently still believe speculative justification outweighed paramount interest evenhanded enforcement law rule authorizes punishment one two equally guilty wrongdoers violates essence constitutional requirement sovereign must govern impartially respectfully dissent common sense indicates many young people engage sexual activity regardless new york legislature incidence venereal disease premarital pregnancy affected availability unavailability contraceptives although young persons theoretically may avoid harms practicing total abstention inevitably many carey population services international stevens concurring part judgment million teenagers became pregnant see ante must countless violations california statute statistics cited justice brennan also indicate correctly observes statute seems ineffective deterrent sexual activity see ante see carey population services international supra stevens concurring part judgment equal protection analysis often said involve different levels scrutiny may accurate say burden sustaining equal protection challenge much heavier cases others racial classifications subjected strict scrutiny presumptively invalid seldom ever legitimate reason treating citizens differently race hand economic classifications presumptively valid necessary component regulatory programs cases involving discrimination men women natural differences sexes sometimes relevant sometimes wholly irrelevant differences obviously irrelevant discrimination treated presumptively unlawful way racial classifications presumptively unlawful cf califano goldfarb stevens concurring judgment case apparent connection discrimination fact women become pregnant may appropriate presume classification lawful presumption however may overcome demonstration apparent justification discrimination illusory wholly inadequate thus instead applying form scrutiny sex discrimination cases perhaps burden heavier others nevertheless previously suggested ultimate standard equal protection cases essentially see craig boren stevens concurring professor cox recently noted however level scrutiny described final analysis always deciding whether judgment harm done disadvantaged class legislative classification disproportionate public purposes measure likely achieve cox book review harv rev see general electric gilbert stevens dissenting hypothetical racial classification illustrate point assume skin pigmentation provides measure protection cancer caused exposure certain chemicals atmosphere therefore white employees confront greater risk black employees certain industrial settings rational require black employees wear protective clothing exempt whites requirement seems greater risk harm white workers reason including requirement granting exemption light indisputable biological fact find somewhat puzzling california conclusion quoted plurality ante males persons may physiologically cause result law properly seeks avoid cal emphasis original presumably california referring equally indisputable biological fact females may become pregnant however pregnancy results sexual intercourse two willing participants california statute directed conduct find difficult conclude pregnancy caused solely male participant according state california statute commonly employed situations involving force prostitution pornography coercion due status relationships state interest situations apparent brief respondent justice rehnquist justice blackmun apparently attach significance testimony preliminary hearing indicating petitioner struck partner see opinion rehnquist ante opinion blackmun ante light fact petitioner equally guilty crime charged complaint whether testimony true obviously bearing legal question presented case question whether facts fit crime opinion blackmun ante question answered trial rather whether statute defining crime fits constitutional requirement justice administered evenhanded fashion