people mention contenders senior roles u.s. president-elect donald trump work form administration take office jan. 20 accord reuters source media report trump already tap number people top job administration list post already fill see mitt romney 2012 republican presidential nominee former massachusetts governor rudy giuliani republican former mayor new york city bob corker republican u.s. senator tennessee chairman senate foreign relations committee david petraeus retire general former cia director plead guilty mishandle classify information share biographer affair jon huntsman former republican utah governor ambassador china president barack obama run republican presidential nomination 2012 jam stavridis retire navy admiral john bolton u.s. ambassador unite nations president george w. bush foreign policy adviser 2012 republican presidential nominee mitt romney rex tillerson president chief executive officer exxon mobil joe manchin democratic u.s. senator west virginia dana rohrabacher republican u.s. representative california senior member house committee foreign affairs michael mccaul republican u.s. representative texas chairman house homeland security committee david clarke milwaukee county sheriff vocal trump supporter retire marine corps general john kelly former leader military southern command joe arpaio lose bid re-election maricopa county arizona sheriff campaign trump kris kobach kansas secretary state frances townsend homeland security counterterrorism adviser president george w. bush jeff holmstead energy lawyer former epa official george w. bush administration robert grady venture capitalist partner private equity firm gryphon investors leslie rutledge republican arkansas attorney general carol comer commissioner indiana department environmental management scott pruitt republican oklahoma attorney general kevin cramer republican u.s. representative north dakota robert grady venture capitalist partner private equity firm gryphon investors heidi heitkamp democratic u.s. senator north dakota joe manchin democratic u.s. senator west virginia gary cohn president goldman sachs group inc larry nichols co-founder devon energy corp jam connaughton ceo nautilus data technologies former environmental adviser president george w. bush rick perry republican former texas governor forrest lucas founder oil products company lucas oil heidi heitkamp democratic u.s. senator north dakota robert grady venture capitalist partner gryphon cathy mcmorris rodgers u.s. representative washington state house republican conference chair sarah palin former alaska governor 2008 republican vice presidential nominee jan brewer former republican arizona governor mary fallin republican oklahoma governor ray washburne ceo investment company charter hold navy admiral mike rogers director national security agency ronald burgess retire u.s. army lieutenant general former defense intelligence agency chief robert cardillo director national geospatial-intelligence agency pete hoekstra republican former u.s. representative michigan rudy giuliani former new york mayor debra wong yang former u.s. attorney california central district appoint former president george w. bush ralph ferrara securities attorney proskauer paul atkins republican former sec commissioner paul atkins head trump transition team independent financial regulatory agencies include sec daniel gallagher republican former sec commissioner john allison former ceo regional bank bb former ceo cato institute paul atkins former sec commissioner thomas hoenig federal deposit insurance corp vice chairman dan dimicco former ceo steel producer nucor corp robert lighthizer washington trade attorney former deputy u.s. trade representative republican reagan administration andrew puzder ceo cke restaurants lou barletta republican u.s. representative pennsylvania victoria lipnic u.s. equal employment opportunity commission member former labor department official george w. bush administration gary cohn goldman sachs group inc president mick mulvaney republican u.s. representative south carolina david malpass former chief economist investment bank bear stearns senior trump adviser also serve ronald reagan george h.w bush presidential administrations scott brown former republican u.s. senator massachusetts sarah palin former alaska governor jeff miller former republican u.s. representative florida chairman house veterans affairs committee trump transition team confirm president-elect would choose list 21 name draw campaign include republican u.s. senator mike lee utah william pryor federal judge 11th u.s. circuit court appeal factbox contenders key job trump 's administration