lehnhausen lake shore auto parts argued january decided february together barrett county clerk cook county illinois et al shapiro et also certiorari illinois constitutional provision subjecting corporations similar entities individuals ad valorem taxes personalty comports equal protection requirements accorded wide latitude making classifications drawing lines judgment produce reasonable taxation systems quaker city cab pennsylvania disapproved pp reversed douglas delivered opinion unanimous william scott attorney general illinois argued cause petitioner briefs jayne carr assistant attorney general aubrey kaplan argued cause filed brief petitioners arnold flamm argued cause respondents brief arthur susman louis biro argued cause respondents filed brief corporation respondents weil sons et al gust dickett filed brief respondents shapiro et al edward berman eugene sherman lewis schlifkin filed brief proprietor respondents herman dba spot et al fn richard ogilvie governor illinois filed brief amicus curiae urging reversal louis ancel stewart diamond samuel witwer filed brief proviso township high school district et al amici curiae urging affirmance cases william dillon filed brief members corporate fiduciaries association illinois amici curiae cases justice douglas delivered opinion people illinois amended constitution adding art become effective january reading notwithstanding provision constitution taxation personal property valuation prohibited individuals amendment abolish personal property tax valuation levied individuals affect tax levied corporations entities considered law individuals amendment achieve result adding new article constitution article thus setting aside existing provisions article ix section require taxation valuation forms property real personal owned individuals corporations shapiro individuals also brought suit alleging natural persons personal property one family one sole proprietor business one partnership different trial judge entered order cases dismissing complaints except shapiro members class trial judge held provisions illinois law imposing personal property taxes property owned corporations unaffected art line statement ballot quoted respondents cases appealed illinois held art affect forms real personal property taxes personal property taxes individuals construed mean ad valorem taxation personal property owned natural person two natural persons joint tenants tenants common construed illinois held tax violated equal protection clause fourteenth amendment one justice dissenting cases writs certiorari granted equal protection clause mean state may draw lines treat one class individuals entities differently others test whether difference treatment invidious discrimination harper virginia board elections taxation concerned specific federal right apart equal protection imperiled large leeway making classifications drawing lines judgment produce reasonable systems taxation stated allied stores ohio bowers wide discretion laying taxes dealing proper domestic concerns trenching upon prerogatives national government violating guaranties federal constitution attribute sovereign powers devising fiscal systems ensure revenue foster local interests course exercise taxing power subject requirements equal protection clause fourteenth amendment clause imposes iron rule equality prohibiting flexibility variety appropriate reasonable schemes state taxation state may impose different specific taxes upon different trades professions may vary rate excise upon various products required resort close distinctions maintain precise scientific uniformity reference composition use value say investigation fields disclose basis legislation lead reasonable men conclude ground difference made existence unchallenged differences taxation incomes individuals corporations every federal revenue act since adoption sixteenth amendment demonstrates may usually important difference degree business done corporations done individuals see reason larger business may taxed small ones disregarded think immaterial exceptions found general rule furthermore state desired discourage form activity corporate form expressed desire special tax think nothing fourteenth amendment prevent said even principles fourteenth amendment applicable present case substantial difference carrying business corporations taxed business conducted private firm individual thing taxed mere dealing merchandise actual transactions may whether conducted individuals corporations tax laid upon privileges exist conducting business advantages inhere corporate capacity taxed enjoyed private firms individuals advantages obvious led formation companies nearly branches trade continuity business without interruption death dissolution transfer property interests disposition shares stock advantages business controlled managed corporate directors general absence individual liability things inhere advantages business thus conducted exist business conducted private individuals partnerships distinctive privilege subject taxation mere buying selling handling goods may whether done corporations individuals rapid transit new york excise tax levied every utility business units sustaining tax claim lack equal protection said since carriers utilities right eminent domain use public property special franchises public contracts many points distinction businesses including relative freedom competition especially significant increasing density population municipal expansion public service organizations valid ground virtue equal protection clause object separate treatment related distinctions approval treatment separateness distinguishes public service corporations others leads us conclude present cases making corporations like entities individuals liable ad valorem taxes personal property transcend requirements equal protection madden kentucky state laid ad valorem tax per deposits banks outside state per deposits within state classification sustained charge invidious discrimination noting taxation even fields legislatures possess greatest freedom classification presumption constitutionality overcome explicit demonstration classification hostile oppressive discrimination particular persons classes ibid added burden one attacking legislative arrangement negative every conceivable basis might support ibid idea elaborated thus carmichael southern coal sustaining unemployment tax employers said state legislature enactment laws widest possible latitude within limits constitution nature case record complete catalogue considerations move members enact laws absence record courts assume action capricious informed acquaintance local conditions legislation applied aware facts afford reasonable basis action faithful adherence guiding principle judicial review legislation possible preserve legislative branch rightful independence ability function strike tax discriminatory substituted judgment facts dimly aware legislative judgment reflects vivid reaction pressing fiscal problems quaker city cab pennsylvania relic bygone era follow stay within narrow confines judicial review important part constitutional tradition reversed footnotes result either reverse directions dismiss complaints affirm judgment dismissed complaints two cases heard illinois along petition file original suit one maynard owned nonbusiness personal property three school districts petition dismissed classic examples taxes discriminated newspapers struck first amendment grosjean american press discriminated interstate commerce see pipe line calvert required licenses engage interstate commerce see bolling sharpe decided may held federal discrimination case racial nature may arbitrary violative due process term used fifth amendment atlantic pacific tea grosjean state classified chain stores purposes chain store tax according number stores inside outside state sustained tax saying statute bears equally upon fall class satisfies guaranty equal protection carmichael southern coal state laid unemployment tax employers excluding inter alia agriculture domestic service crews vessels navigable waters eleemosynary institutions sustained tax saying repeatedly held inequalities result singling one particular class taxation exemption infringe constitutional limitation added legislature bound tax every member class none may make distinctions degree rational basis subjected judicial scrutiny must presumed rest basis conceivable state facts support ibid note supra