washington u.s. president-elect donald trump choose republican national committee chairman reince priebus white house chief staff name stephen bannon former head conservative web site breitbart news chief strategist senior counselor trump take office jan. 20 succeed democratic president barack obama also look fill top administration job come weeks people mention contenders senior roles bob corker tennessee senator chairman senate foreign relations committee john bolton former u.s. ambassador unite nations president george w. bush newt gingrich republican former u.s. house speaker zalmay khalilzad former u.s. ambassador iraq jeb hensarling texas republican congressman chairman house financial service committee steven mnuchin former goldman sachs executive trump campaign finance chairman jamie dimon jpmorgan chase co chief executive officer tom barrack founder chairman colony capital inc lieutenant general michael flynn former director defense intelligence agency stephen hadley former national security adviser president george w. bush jon kyl former republican senator arizona jeff sessions republican senator alabama early trump supporter member senate arm service committee kelly ayotte outgo republican senator new hampshire member senate arm service committee duncan hunter republican congressman california early trump supporter member house arm service committee jim talent former republican senator missouri senate arm service committee rudy giuliani republican former mayor new york city jeff sessions senior member senate judiciary committee take hard line immigration chris christie republican new jersey governor pam bondi republican florida attorney general trey gowdy republican congressman south carolina head house committee investigate 2012 attack u.s. mission benghazi libya ben carson former neurosurgeon 2016 republican presidential candidate newt gingrich rich bagger former pharmaceutical executive former top aide new jersey governor chris christie bobby jindal former louisiana governor michael mccaul u.s. republican congressman texas chairman house homeland security committee david clarke milwaukee county sheriff vocal trump supporter joe arpaio outgo maricopa county arizona sheriff campaign trump myron ebell climate change skeptic libertarian competitive enterprise institute oversee environmental policy trump transition team robert grady venture capitalist partner private equity firm gryphon investors leslie rutledge arkansas attorney general carol comer commissioner indiana department environmental management harold hamm oklahoma oil gas mogul ceo continental resources inc jam connaughton ceo nautilus data technologies former environmental adviser president george w. bush robert grady sarah palin republican former alaska governor run vice president 2008 jan brewer former arizona governor forrest lucas founder oil products company lucas oil harold hamm robert grady linda mcmahon former world wrestle entertainment executive two-time senate candidate lieutenant general michael flynn mike rogers republican former congressman michigan chair house intelligence committee pete hoekstra republican former congressman michigan lieutenant general michael flynn stephen hadley kelly ayotte richard grenell former spokesman unite state unite nations peter king republican congressman new york dan dimicco former chief executive steel producer nucor corp jeff miller retire congressman florida chairman veterans affairs committee factbox trump tap priebus chief staff weigh major hire