fernandez california argued november decided february police officers observed suspect violent robbery run apartment building heard screams coming one apartments knocked apartment door answered roxanne rojas appeared battered bleeding officers asked step apartment conduct protective sweep petitioner came door objected suspecting assaulted rojas officers removed petitioner apartment placed arrest identified perpetrator earlier robbery taken police station officer later returned apartment obtaining rojas oral written consent searched premises found several items linking petitioner robbery trial denied petitioner motion suppress evidence convicted california appeal affirmed held petitioner present rojas consented search exception permissible warrantless consent searches jointly occupied premises arises one occupants present objects search georgia randolph apply therefore petitioner suppression motion properly denied held randolph extend situation rojas consent provided well petitioner removed apartment pp consent searches permissible warrantless searches schneckloth bustamonte clearly reasonable consent comes sole occupant premises multiple occupants involved rule extends search premises effects absent nonconsenting occupant long consent one possesses common authority premises effects obtained matlock however physically present inhabitan refuses consent refusal dispositive regardless consent fellow occupant randolph controlling factor randolph objecting occupant physical presence see pp petitioner contends though present rojas consented randolph nevertheless controls neither arguments sound pp first argues absence matter since occurred police taken away dictum randolph suggesting consent one occupant might sufficient evidence police removed potentially objecting tenant entrance sake avoiding possible objection best understood refer situations removal potential objector objectively reasonable petitioner contest fact police reasonable grounds removal existence probable cause arrest thus position occupant absent reason pp petitioner also argues objection made threshold remained effective changed mind withdrew inconsistent randolph least two important ways squared widely shared social expectations customary social usage upon randolph holding based also creates sort practical complications randolph sought avoid adopting formalis tic rule requiring scope objection duration procedures necessary register continuing objection defined pp petitioner claims expansive interpretation randolph hamper law enforcement cases officers probable cause arrest physically present objector also probable cause obtain warrant search premises objector want enter misunderstands constitutional status consent searches permissible irrespective availability warrant requiring officers obtain warrant warrantless search justified may interfere law enforcement strategies impose unmerited burden person willing consent immediate search pp cal app cal rptr affirmed alito delivered opinion roberts scalia kennedy thomas breyer joined scalia thomas filed concurring opinions ginsburg filed dissenting opinion sotomayor kagan joined opinion notice opinion subject formal revision publication preliminary print reports readers requested notify reporter decisions washington typographical formal errors order corrections may made preliminary print goes press walter fernandez petitioner california writ certiorari appeal california second appellate district february justice alito delivered opinion cases firmly establish police officers may search jointly occupied premises one consents see matlock georgia randolph recognized narrow exception rule holding consent one occupant insufficient another occupant present objects search case consider whether randolph applies objecting occupant absent another occupant consents opinion randolph took great pains emphasize holding limited situations objecting occupant physically present therefore refuse extend randolph different situation case consent provided abused woman well male partner removed apartment shared events involved case occurred los angeles october observing abel lopez cash check petitioner walter fernandez approached lopez asked neighborhood lived lopez responded mexico fernandez laughed told lopez territory ruled drifters gang app petitioner pulled knife pointed lopez chest lopez raised hand petitioner cut wrist lopez ran scene called help petitioner whistled four men emerged nearby apartment building attacked lopez knocking ground hit kicked took cell phone wallet contained cash police dispatch reported incident mentioned possibility gang involvement two los angeles police officers detective clark officer cirrito drove alley frequented members drifters man appeared scared walked officers said guy apartment officers observed man run alley building man pointing minute two later officers heard sounds screaming fighting coming building backup arrived officers knocked door apartment unit screams heard roxanne rojas answered door holding baby appeared crying face red large bump nose officers also saw blood shirt hand appeared fresh injury rojas told police fight officer cirrito asked anyone else apartment rojas said son person present officer cirrito asked rojas step apartment conduct protective sweep petitioner appeared door wearing boxer shorts apparently agitated petitioner stepped forward said right come know rights suspecting petitioner assaulted rojas officers removed apartment placed arrest lopez identified petitioner initial attacker petitioner taken police station booking approximately one hour petitioner arrest detective clark returned apartment informed rojas petitioner arrested detective clark requested received oral written consent rojas search apartment police found drifters gang paraphernalia butterfly knife clothing worn robbery suspect ammunition rojas young son also showed officers petitioner hidden shotgun petitioner charged robbery cal penal code ann west infliction corporal injury spouse cohabitant child parent possession firearm felon west possession shotgun felony possession ammunition trial petitioner moved suppress evidence found apartment hearing denied motion petitioner pleaded nolo firearms ammunition charges counts robbery infliction corporal injury went trial found guilty jury sentenced years imprisonment california appeal affirmed cal app cal rptr randolph overturn prior decisions recognizing occupant may give effective consent search shared residence agreed majority federal circuits objecting occupant physical presence indispensible decision randolph cal rptr petitioner present rojas consented held petitioner suppression motion properly denied cal rptr california denied petition review granted certiorari ii fourth amendment prohibits unreasonable searches seizures provides warrant may issued without probable cause text fourth amendment specify search warrant must obtained kentucky king slip cases establish warrant generally required search home brigham city stuart ultimate touchstone fourth amendment ibid see also michigan fisher per curiam certain categories permissible warrantless searches long recognized consent searches occupy one categories consent searches part standard investigatory techniques law enforcement agencies constitutionally permissible wholly legitimate aspect effective police activity schneckloth bustamonte unreasonable indeed absurd require police officers obtain warrant sole owner occupant house apartment voluntarily consents search owner home right allow others enter examine premises reason owner permitted extend privilege police officers owner choice owner believes suspicion owner may want police search premises suspicions dispelled may particularly important owner strong interest apprehension perpetrator crime believes suspicions police deflecting course investigation owner may want police search even lack probable cause warrant always required done even police establish probable cause requiring warrant despite owner consent needlessly inconvenience everyone involved officers magistrate also occupant premises generally either compelled feel need stay search completed michigan summers clear warrantless search reasonable sole occupant house apartment consents happens two occupants must consent must asked consent one occupant enough faced problem years ago matlock case matlock woman named graff living together house also occupied several graff siblings mother rented house front yard house matlock arrested bank robbery placed squad car although police easily asked consent search room graff shared instead knocked door obtained graff permission search search yielded incriminating evidence defendant sought suppress held graff consent justified warrantless search put consent one possesses common authority premises effects valid absent nonconsenting person authority shared illinois rodriguez reaffirmed extended matlock holding rodriguez woman named fischer told police officers assaulted rodriguez termed apartment also informed officers rodriguez asleep apartment accompanied officers unit arrived officers knocked door awakened rodriguez done rodriguez might well surrendered door objected officers entry instead fischer unlocked door officers entered without warrant saw drug paraphernalia containers filled white powder plain view search police learned fischer longer resided apartment held common authority premises time question nevertheless held warrantless entry lawful police reasonably believed fischer resident consent one resident jointly occupied premises generally sufficient justify warrantless search recognized narrow exception rule georgia randolph case police responded randolphs home receiving report domestic dispute officers arrived janet randolph informed officers estranged husband scott randolph cocaine user items drug evidence house internal quotation marks omitted officers first asked scott consent search unequivocally refused ibid officers turned janet consented search produced evidence later used convict scott possession cocaine without questioning prior holdings matlock rodriguez held janet randolph consent insufficient circumstances justify warrantless search reiterated proposition person shares residence others assumes risk one may admit visitors consequence guest obnoxious one may nevertheless admitted absence another held physically present inhabitant express refusal consent police search home dispositive regardless consent fellow occupant emphasis added opinion went great lengths make clear holding limited situations objecting occupant present opinion stressed controlling factor see present scene ibid physically present present physically present present objecting standing door expressly refusing consent physically present resident physically present fellow tenant objects ibid potential defendant objecting door objects physically present inhabitant express refusal consent police search dispositive opinion hardly clearer point separate opinion filed justice breyer whose vote decisive equally unambiguous see concurring opinion apply objector present object ing iii case petitioner present rojas consented petitioner still contends randolph controlling advances two main arguments first claims absence matter since absent police taken away second maintains sufficient objected search still present objection says remain effect objecting party longer wishes keep police home brief petitioner neither arguments sound first consider argument presence objecting occupant necessary police responsible absence randolph suggested dictum consent one occupant might sufficient evidence police removed potentially objecting tenant entrance sake avoiding possible objection believe statement read suggest improper motive may invalidate objectively justified removal hence govern randolph dictum best understood require inquiry subjective intent officers detain arrest potential objector instead refer situations removal potential objector objectively reasonable petitioner acknowledges see brief petitioner fourth amendment cases repeatedly rejected subjective approach brigham city alteration internal quotation marks omitted indeed never held outside limited contexts search administrative inspection officer motive invalidates objectively justifiable behavior fourth amendment king slip petitioner claim randolph meant break consistent practice think recognized test one objective reasonableness petitioner argument collapses contest fact police reasonable grounds removing apartment speak rojas apparent victim domestic violence outside petitioner potentially intimidating presence fact even contest existence probable cause place arrest therefore hold occupant absent due lawful detention arrest stands shoes occupant absent reason conclusion make mockery randolph petitioner protests brief petitioner simply accepts randolph terms randolph holding unequivocally requires presence objecting occupant every situation one mentioned dictum discussed brings us petitioner second argument objection made threshold premises police wanted search remained effective changed mind withdrew objection argument inconsistent randolph reasoning least two important ways first argument squared widely shared social expectations customary social usage upon randolph holding based see explaining consent one occupant override objection physically present occupant randolph stated fair say caller standing door shared premises confidence one occupant invitation sufficiently good reason enter fellow tenant stood saying without good reason sensible person go inside conditions seems obvious calculus hypothetical caller likely quite different objecting tenant standing door objecting occupant standing threshold saying stay friend visitor invited enter another occupant expect best uncomfortable scene worst violence tries brush past objector objector scene especially known objector return course visit friend visitor much likely accept invitation thus petitioner argument inconsistent randolph reasoning second petitioner argument create sort practical complications randolph sought avoid randolph recognized adopting formalis tic rule interests simple clarity administrability rule petitioner us adopt produce plethora practical problems one thing question duration petitioner argues objection made last withdrawn objector rule unreasonable suppose husband wife owned house joint tenants husband objecting search house convicted sentenced prison term petitioner proposed rule wife unable consent search house years date husband objected refuse stretch randolph strange lengths persuaded hold objection lasts reasonable time certainly unusual set forth precise time limits governing police action maryland shatzer interval time reasonable context week month year ten years petitioner rule also require police ultimately courts determine whether passage time objector still common authority premises often tricky question suppose incarcerated objector consenting joint tenants lease objector incarceration stopped paying rent still common authority objection retain force enough name remained lease result different objecting consenting lessees oral tenancy another problem concerns procedure needed register continuing objection necessary occupant object police officers door presence time consent needed occupant present premises objection made objection made person like scott randolph suspecting estranged wife might invite police view drug stash paraphernalia register objection advance done posting sign front house standing objection registered serving notice chief police finally question particular law enforcement officers bound objection set include officers present objection made also apply officers working investigation extend officers unaware objection officers assigned different arguably related cases limited law enforcement agency randolph taken word applies objector standing door saying stay officers propose make consent search problems disappear response arguments petitioner argues randolph requirement physical presence without ambiguity acknowledge conclude randolph requires presence premises searched may cases outer boundary premises disputed confronted similar problem last term bailey despite arguments similar offered petitioner adopted rule applies affected individual near premises searched held premises rule workable context see ground reaching different conclusion petitioner argues strenuously expansive interpretation randolph hamper law enforcement cases officers probable cause arrest physically present objector also probable cause search premises objector want enter see brief petitioner argument misunderstands constitutional status consent searches warrantless consent search reasonable thus consistent fourth amendment irrespective availability warrant even modern technological advances warrant procedure imposes burdens officers wish search magistrate must review warrant application party willing give consent warrantless search justified requiring police obtain warrant may unjustifiably interfer legitimate law enforcement strategies king slip requirement may also impose unmerited burden person consents immediate search since warrant application procedure entails delay putting exception adopted randolph one side lawful occupant house apartment right invite police enter dwelling conduct search rule trample rights occupant willing consent occupant may want police search order dispel suspicion raised sharing quarters criminal see also schneckloth evidence obtained pursuant consent search may insure wholly innocent person wrongly charged criminal offense occupant may want police conduct thorough search dangerous contraband found removed case example search resulted discovery removal shotgun rojas son access denying someone rojas position right allow police enter home also show disrespect independence beaten rojas petitioner bar controlling access home time chose relent fourth amendment give power judgment california appeal affirmed ordered scalia concurring walter fernandez petitioner california writ certiorari appeal california second appellate district february justice scalia concurring like justice thomas believe georgia randolph wrongly decided nonetheless join opinion faithful application randolph write separately address argument search petitioner shared apartment violated fourth amendment right property law exclude police see brief national association criminal defense lawyers amicus curiae dismisses argument pointing statement matlock cotenant ability search rest upon law property attendant historical legal refinements see brief amicus curiae think argument easily dismissed sure katz property rights sole measure fourth amendment violations florida jardines slip recently made clear katz test added substituted traditional understanding fourth amendment slip quoting jones slip therefore find difficult case established law give petitioner cotenant right admit visitors petitioner objection difficulty arise however authorities cited amicus association fail establish guest commit trespass one two joint tenants invited guest enter tenant forbade guest indeed limited authority subject points opposite conclusion see tenancy common licensee one tenant liable trespass nonconsenting cotenants dinsmore renfroe cal app buchanan jencks cases cited therein cf tiffany real property ed endorsing opposite view acknowledging little authority question accordingly basis us conclude police infringed property right petitioner entered premises cotenant consent thomas concurring walter fernandez petitioner california writ certiorari appeal california second appellate district february justice thomas concurring join opinion faithfully applies georgia randolph write separately make clear extent disagreement randolph dissented randolph facts case implicate fourth amendment search never analyzed thomas dissenting fourth amendment search occurs spouse accused voluntarily leads police potential evidence wrongdoing accused instead deciding case narrow ground majority randolph looked widely shared social expectations resolve whether wife consent search control husband objection find support novel analytical approach fourth amendment text history jurisprudence see roberts dissenting accordingly given blank slate analyze case consistent chief justice dissent randolph warrantless search reasonable police obtain voluntary consent person authorized give risk one number might permit common area searched ibid quoting matlock case trial found rojas consent voluntary see ante petitioner contest rojas common authority premises end matter ginsburg dissenting walter fernandez petitioner california writ certiorari appeal california second appellate district february justice ginsburg justice sotomayor justice kagan join dissenting fourth amendment guarantees people right secure houses unreasonable searches seizures warrants search premises amendment instructs shall issue authorized neutral magistrate upon showing probable cause believe criminal activity occurred afoot read complementary provisions convey whenever practicable police must obtain advance judicial approval searches seizures warrant procedure terry ohio warrant requirement justice jackson observed ranks among fundamental distinctions form government officers law law johnson accordingly declared warrantless searches main per se unreasonable mincey arizona internal quotation marks omitted see groh ramirez main rule remain hardy explained exceptions warrant requirement must number carefully delineated dist eastern dist see kyllo instead adhering warrant requirement today decision tells police may dodge nevermind ample time secure approval neutral magistrate suppressing warrant requirement shrinks petite size holding georgia randolph physically present inhabitant express refusal consent police search home dispositive regardless consent fellow occupant case calls straightforward application randolph police officers randolph confronted scenario closely resembling situation presented police arrived janet scott randolph shared residence scott randolph unequivocally refused officer request permission search home georgia randolph officer asked janet randolph consent search readily gave ibid sequence similar walter fernandez physically present home rebuffed officers request come police removed premises arrested albeit cause believe assaulted cohabitant roxanne rojas time arrest rojas said nothing contradict fernandez refusal hour later however attempt obtain search warrant police returned apartment prevailed upon rojas sign consent form authorizing search premises see infra circumstances triggering fourth amendment traditional hostility police entry home without warrant breyer concurring least salient randolph cases search issue search solely evidence objecting party premises made objection police entry known clearly directly officers seeking enter residence officers might easily secured premises sought warrant permitting enter moreover objector custody scant danger persons premises risk evidence might destroyed concealed pending request receipt warrant see despite marked similarities removes case randolph ambit principally seizing fact fernandez unlike scott randolph longer present objecting police obtained consent ante fernandez present stated objection searchers uncertain terms see app right come know rights internal quotation marks omitted officers scarcely forgotten one hour later fernandez refused consent physically present express objection dispositive randolph tells us widely shared social expectations customary social usage undergirding randolph holding apply objector remains physically present ante internal quotation marks omitted randolph discussion social expectations however hinge objector physical presence vel non time search hen people living together disagree use common quarters randolph observes resolution must come voluntary accommodation appeals authority see also common understanding one generally right authority prevail express wishes another whether issue color curtains invitations outsiders cooperative occupant invitation adds nothing government side counter force objecting individual claim security government intrusion dwelling randolph thus trained whether joint occupant conveyed objection visitor entry suggest objection ignored police reappeared post objector arrest visitor might less reluctant enter joint occupant objection speculates visitor knows objector see ante hobbesian world however one person social obligations another limited presence able enforce henderson rovner dissenting conjectures social behavior rate shed little light constitutionality warrantless home search given marked distinctions private interactions police investigations police power private person enjoys case illustrates put tenant handcuffs remove premises moreover comprehended last term background social norms invite visitor front door invite conduct search florida jardines slip similarly even shared tenancy understood entail prospect visits unwanted social callers objecting resident gone unwelcome visitor license hardly include free rein rummage dwelling search evidence next cautions applying randolph facts pose plethora practical problems ante instance asks must cotenant objection registered respected indefinitely yet blinks reality suppose fernandez withholding consent stop police tracks eternally cf ante imagining objector behind bars serving sentence still refusing permission search residence mount prosecution eventuating conviction course state first need obtain incriminating evidence get easily simply applying warrant warrant police hands practical problems disappear indeed acknowledges see ante reading randolph require continuous physical presence poses administrative difficulties occupant refusal consent lose force soon absents doorstep even moment police free enter instant objector leaves door retire nap answer phone use bathroom speak another officer outside see brief petitioner hypothesized practical considerations short provide cause today drastic reduction randolph holding attendant disregard warrant requirement ii zeal diminish randolph today decision overlooks warrant requirement venerable role bulwark fourth amendment protection franks delaware reducing randolph narrow exception declares main rule consent one resident jointly occupied premises generally sufficient justify warrantless search ante declaration backwards consent searches carefully drawn exception fourth amendment rule ordinarily prohibiting warrantless entry person house unreasonable per se randolph quoting jones see also jardines slip hen comes fourth amendment home first among equals amendment core stands right man retreat home free unreasonable governmental intrusion payton new york physical entry home chief evil fourth amendment directed internal quotation marks omitted case police readily obtained warrant search shared dispute instead disparages warrant requirement inconvenient burdensome entailing delay ven modern technological advances ante shut sight ease speed search warrants nowadays obtained see missouri mcneely slip observing technology allow expeditious processing warrant applications citing state statutes permitting warrants obtained remotely various means including telephonic radio communication electronic communication video conferencing see also brief national association criminal defense lawyers amicus curiae describing california procedures electronic warrant applications developments view dilution warrant requirement vigilantly resisted although police probable cause obtain warrant dispatch gain consent someone suspect law insist formality warrant framers saw neutral magistrate essential part criminal process shielding us good bad saint sinner unchecked police activity see johnson point fourth amendment denies law enforcement support usual inferences reasonable men draw evidence protection consists requiring inferences drawn neutral detached magistrate instead judged officer engaged often competitive enterprise ferreting investigation crime course always simplified warrants unnecessary mincey arizona fourth amendment long recognized reflects view wrote bill rights privacy person home property may totally sacrificed name maximum simplicity enforcement criminal law ibid see also randolph generalized interest expedient law enforcement without justify warrantless final word order reference rojas autonomy view best served allowing consent trump abusive cohabitant objection see ante denying someone rojas position right allow police enter home also show disrespect independence rojas situation distinguishable janet randolph regard person health safety threatened domestic abuser exigent circumstances justify immediate removal abuser premises happened cf randolph case bearing capacity police protect domestic victims question raised reasonably authority police enter dwelling protect resident domestic violence see also brigham city stuart aw enforcement officers may enter home without warrant render emergency assistance injured occupant protect occupant imminent domestic abuse indeed serious problem randolph citing statistics appropriate policy responses scourge may include fostering effective counseling providing public information ready access protective orders enforcing orders understood randolph however specter domestic abuse hardly necessitates diminution fourth amendment rights stake reasons stated honor fourth amendment warrant requirement hold fernandez objection search become null upon arrest removal scene every reason conclude securing warrant entirely feasible case reason contract fourth amendment dominion kentucky king ginsburg dissenting slip therefore reverse judgment california appeal footnotes use terms occupant resident tenant interchangeably refer persons common authority premises within meaning matlock see matlock petitioner dissent suggest rojas consent coerced post opinion ginsburg trial found otherwise app correctness finding us suggesting rojas consent coerced dissent recites portions rojas testimony suppression hearing trial judge appears rejected ibid similarly jury plainly find rojas credible trial testified defense told jury among things wounds observed officers came door inflicted petitioner woman looking petitioner fight cal app cal rptr jury obviously believe testimony found petitioner guilty inflicting corporal injury see cooke randolph narrow exception general matlock rule permitting cotenant consent relevant physically present objectors hudspeth concluding narrow holding randolph repeatedly referenced defendant physical presence immediate objection inapplicable henderson recognizing randolph left bulk consent law place holding applies defendant present objects search home mckerrell randolph carefully delineated narrow circumstances holding applied randolph consciously employed rule requiring express objection present see murphy holding objects search another party common authority subsequently gives consent search absence first search invalid objecting nce registered objection refusal grant consent remains effective barring objective manifestation changed position longer objects main theme dissent police case probable cause search apartment therefore obtained warrant course always cases one occupant consents search objects dissent suggest warrant required probable cause present result dissent repeated references availability warrant case beside point although dissent intimates customary social usage goes see post dissent provides support doubtful proposition present case example suppose rojas called relative friend supportive neighbor person works group aids battered women invited individual enter examine premises petitioner jail invitees felt beyond rojas authority extend invitation petitioner objection instead attempting show persons felt improper accept invitation dissent quickly changes subject says conjectures social behavior shed little light constitutionality search case post holding georgia randolph based widely shared social expectations customary social usage see thus dissent simply fails come grips reasoning precedent relies footnotes correct case involve situation alluded randolph police removed potentially objecting tenant entrance sake avoiding possible objection georgia randolph randolph one disputes police probable cause place objecting tenant arrest objector arrest illegal randolph suggested remaining occupant consent search suffice suggestion randolph recognizes see ante odds today decision police prevent objecting search arrest surely arrest seek ignore objection already made murphy remarkably thinks disagreement account applicable social norms distances randolph understanding social expectations see ante quite opposite randolph considered whether customary social understanding accords consenting tenant authority powerful enough prevail objection social practice circumstances held provided cause depart principle respect privacy home quoting wilson layne see also disputed permission match central value fourth amendment hold today decision contrast provides police ready means nullify cotenant objection therefore fails come grips reasoning randolph ante agree sole owner occupant consents search police enter without obtaining warrant see ante multiple persons occupy premises true upheld warrantless home searches based one tenant consent cases however involve case occupant told police enter see matlock police relied cotenant consent search tenant already detained nearby squad car illinois rodriguez tenant asleep bedroom rationale allowing search proceed instances assum risk one number might permit common area searched matlock apply occupant premises explicitly tells police search home sans warrant see henderson rovner dissenting circumstances objector assumed risk may subsequently admit visitor choice taken involuntary removal premises dismisses beside point undeniable fact police easily obtained warrant ante may circumstances observes police faced cotenant objection lack probable cause obtain warrant argument considered rejected randolph recognized alternatives disputed consent always open door search evidence police suspect inside moreover unlikely police possessing objective basis arrest objecting tenant nevertheless lack probable cause obtain search warrant probable cause arrest recognize calls showing discrete showing needed establish probable cause search home suspect arrested near residence often permissible infer instrumentalities fruits th crime presently person residence brief national association criminal defense lawyers amicus curiae quoting lafave search seizure ed observed randolph warrant may impeded tenant refusal consent acting initiative may able deliver evidence police tell police knows use magistrate getting warrant citation omitted although validity rojas consent us record offers cause doubt agreement search fact unpressured exercise evidentiary hearing fernandez motion suppress rojas testified police upon returning residence hour fernandez arrest began questioning son without permission app rojas asked remain present questioning police officer told investigation going determine whether take kids right see also ibid felt like police going take kids away rojas thus maintained felt pressured giving consent see also felt like minutes rojas acceded officer request sign consent form rojas testified want sign form wanted end trial found rojas testimony suppression hearing believable points unbelievable points concluded police conduct amount duress coercion trial agreed however rojas may felt pressured ibid see generally national council juvenile family judges civil protection orders guide improving practice online http internet materials visited available clerk case file epidemiology prevention injury control branch california statewide policy recommendations prevention violence women online http