washington u.s. supreme court tuesday deliver major blow president barack obama put hold federal regulations curb carbon dioxide emissions mainly coal-fired power plant centerpiece administration strategy combat climate change court vote 5-4 along ideological line grant request 27 state various company business group block administration clean power plan also mandate shift renewable energy away fossil fuel highly unusual move justices mean regulations effect court battle continue legality white house tuesday night say disagree court decision say expect rule survive legal challenge remain confident prevail merit white house say add environmental protection agency continue work state want cooperate continue take aggressive step reduce carbon emissions plan design low carbon emissions u.s. power plant 2030 32 percent 2005 level main tool unite state meet emissions reduction target pledge u.n. climate talk paris december senior administration official tell reporters tuesday night despite court procedural decision unite state deliver commitments take new additional step lead internationally climate change supreme court action cast doubt long-term future u.s. environmental protection agency rule increase chance conservative-leaning supreme court would take case low court issue decision legality regulations ultimately would strike recently june high court rule 5-4 obama administration efforts regulate mercury toxic air pollutants state lead coal producer west virginia oil producer texas several major business group october launch legal effort seek block obama administration plan state say emissions curb would devastate impact economies west virginia attorney general patrick morrisey describe supreme court action tuesday historic unprecedented victory epa tom donahue chief executive officer u.s. chamber commerce say high court stay ensure america force make costly irreversible implementation decisions base upon unprecedented regulation judicial review complete obama execute domestic international climate change strategy would key legacy accomplishment near end time office january 2017. house representatives democratic leader nancy pelosi say supreme court deeply misguide decision stay implementation clean power plan enable state deny climate science slow progress reduce carbon pollution threaten health americans house republican leader kevin mccarthy welcome supreme court move say stop illegitimate abuse power 27 state revolt president anti-energy agenda court action also mean obama leave office january 2017 next president say whether continue defend regulation u.s. court appeal district columbia circuit deny similar stay request last month hear oral arguments case june decide whether regulations lawful certainly surprise suggest court serious concern regulation say jonathan adler professor case western reserve school law brief order justices say regulations would hold legal challenge complete court five conservatives vote block rule order note four liberals would deny application epa rule state must submit plan comply emission-reduction target september 2016 also request two-year extension challengers contend obama administration exceed authority clean air act key law address air pollution dozen state national league cities represent 19,000 u.s. cities file court paper back rule jeff holmstead lawyer coal-powered utilities challenge rule say court never block epa rule say unusual bite understatement holmstead add sean donahue lawyer environmental group support law say court action surprise disappoint add remain confident legal factual foundations epa rule sam adams u.s. climate director world resources institute say fight uphold rule important ensure paris agreement stay intact benefit clean power plan definitely worth fight unite state high expectations hop set internationally say supreme court block obama carbon emissions plan