washington u.s. supreme court deliver major rule 2012 2015 preserve president barack obama signature healthcare law tuesday decline take new long-shot challenge obamacare bring iowa artist court turn away appeal matt sissel assert 2010 affordable care act violate u.s. constitution requirement revenue-raising legislation must originate house representatives senate healthcare law high court leave place 2014 rule u.s. court appeal district columbia circuit uphold low court dismissal lawsuit back pacific legal foundation conservative legal group suit target law individual mandate americans obtain health insurance pay tax penalty 6-3 rule last june supreme court reject conservative legal challenge uphold nationwide tax subsidies crucial healthcare law 2012 justices rule 5-4 law requirement americans obtain insurance pay penalty authorize power congress levy tax three-judge appeal court panel unanimous find sissel interpretation law odds u.s. supreme court precedents include high court rule 2012. court find penalty obtain insurance form taxation law pass obama fellow democrats congress 2010 unify opposition republicans conservatives call measure government overreach fight since inception landmark law design provide healthcare millions uninsured americans obama month veto legislation pass republican-led congress would dismantle law spring supreme court hear arguments case bring religious group seek exemption provision law require provide contraception coverage health insurance policies case sissel v. department health human service u.s. supreme court 15-543. u.s. top court reject new challenge obamacare