president donald trump face strong criticism action regard investigations russia role 2016 u.s. election contact campaign moscow trump deny collusion campaign frequently express frustration investigations particular probe special counsel robert mueller critics accuse trump seek hind investigation kremlin deny election interference little serious talk hear congress senate house representatives control trump fellow republicans remove president office however democratic lawmakers speak impeachment historically rare process unite state lead president removal constitution 25th amendment offer alternative path strip president power never use constitution president vice president u.s. officials remove follow impeachment conviction treason bribery high crimes misdemeanors process start house individual members introduce impeachment resolutions like ordinary bill house initiate proceed pass resolution authorize inquiry modern history house judiciary committee oversee impeachment proceed simple majority vote need move impeachment resolution like legislation committee point house majority leader currently republican kevin mccarthy whether put measure vote full chamber hold vote full house approve article impeachment simple majority vote impeachment like indictment senate try official two-thirds vote senate require conviction result removal office president impeach remove vice president take next schedule presidential election pick next occupant white house two american presidents impeach andrew johnson 1868 bill clinton 1998. neither convict senate president richard nixon face almost certain impeachment watergate scandal resign 1974 25th amendment constitution adopt 1967 follow 1963 assassination president john kennedy clarify various issue involve presidential vice presidential succession incapacity amendment section vice president majority either cabinet officials body congress may law provide may declare write president unable discharge power duties office declaration receive senate president pro tempore preside senate absence vice president speaker house vice president take act president president resume office inform two congressional leaders inability exist unless vice president majority cabinet officials another body establish congress tell congressional leaders within four days declaration chief executive unable carry duties congress must assemble within 48 hours decide issue two-thirds members house senate vote respective chamber president unable discharge duties vice president continue act president next schedule presidential election decide next white house occupant otherwise president resume office section 25th amendment come play section enable president temporarily hand power vice president example undergo medical procedure section never invoke factbox step remove u.s. president office