washington republican donald trump presidential election victory doom major obama administration initiatives already tie legal challenge give chance appoint pivotal fifth conservative justice u.s. supreme court democratic president barack obama signature 2010 healthcare law plan combat climate change executive action immigration transgender right policy issue challenge court republicans industry group graphic legal challenge major obama initiatives click tmsnrt.rs/2eznafm trump administration could decide long defend policies court trump take office jan. 20. addition trump incoming republican-led congress could simply repeal rescind obama policies promise trump supreme court appointment possibly first multiple pick would allow restore decades-long conservative majority bench look threat conservative justice antonin scalia die february shorthanded court currently split four conservatives four liberals conservative activists may embolden bring case urge court support gun right uphold abortion restrictions rule religious right conservative court go conservative decisions say kerri kupec lawyer alliance defend freedom conservative christian legal group involve religious right case one issue court could take near term whether business owners oppose same-sex marriage object religious ground provide service gay couple one dispute concern baker colorado another involve florist washington state labor context high court could also revisit whether state force nonunion workers pay unions collective bargain activities court split 4-4 issue march scalia death loss conservative group challenge practice liberal hop gain majority supreme court first time decades last almost nine months scalia death feb. 13 tuesday night vindication republican senate leader mitch mcconnell decision little precedent u.s. history take action obama nominee replace scalia appeal court judge merrick garland trump poise nominate new justice soon take office nominee would consider confirmation republican-controlled senate mcconnell trump may also able make appointments court three justices 78 old include 83-year-old liberal ruth bad ginsburg trump call resign july call faker speculate possibility move new zealand white house fellow liberal stephen breyer 78 conservative anthony kennedy 80. trump able replace ginsburg another liberal justice presidency court conservative wing would strengthen majority could threat important right protect past supreme court say elizabeth wydra president constitutional accountability center liberal legal group cite abortion right efforts ensure racial equality examples conservative court scalia bench would likely favorable toward gun right skeptical abortion supportive death penalty democrat hillary clinton tuesday election liberals may embolden challenge constitutionality death penalty seek gun restrictions limit campaign spend among things trump already issue list 21 judge mainly federal judge appoint president george w. bush state court judge say would consider fill scalia vacancy conservative credentials issue abortion birth control gun right case could affect soonest trump win involve transgender right court oct. 28 take case concern female-born transgender high school student name gavin grimm identify male sue 2015 win right use school boys bathroom grimm back obama administration date set argument case court could potentially delay act nine justices rule could resolve similar litigation around country obama administration directive say school allow transgender students use bathroom choose trump say would rescind obama directive also say would rescind obama executive action protect millions immigrants country illegally deportation give work permit put hold court administration fight revive trump would expect overturn major regulations put place obama include clean power plan curb greenhouse emissions mainly coal-fired power plant process take time mean supreme court could potentially rule legal challenge clean power plan trump dump case pending appeal court washington republican congress trump could seek repeal obama signature healthcare law affordable care act even republican legal challenge could cripple law pending federal appeal court washington obama legacy imperil trump weigh supreme court pick