Question: who will hold the trial of an official who has been impeached

title: Impeachment in the United States
text: Impeachment in the United States is an enumerated power of the legislature that allows formal charges to be brought against a civil officer of government for crimes alleged to have been committed . Most impeachments have concerned alleged crimes committed while in office , though there have been a few cases in which Congress has impeached and convicted officials partly for prior crimes . The actual trial on such charges , and subsequent removal of an official upon conviction , is separate from the act of impeachment itself . Impeachment proceedings have been initiated against several presidents of the United States . Andrew Johnson and Bill Clinton are the only two presidents to have been successfully impeached by the House of Representatives , and both were later acquitted by the Senate . The impeachment process against Richard Nixon was never completed , as Nixon resigned his office before the vote of the full House for impeachment , but such a vote was widely expected to pass , and the threat of it and a subsequent conviction in the Senate was the impetus for Nixon 's departure . To date , no president has been removed from office by impeachment and conviction . The impeached official continues in office until conviction . 

Answer: answer: Most impeachments have concerned alleged crimes committed while in office , though there have been a few cases in which Congress has impeached and convicted officials partly for prior crimes . Andrew Johnson and Bill Clinton are the only two presidents to have been successfully impeached by the House of Representatives , and both were later acquitted by the Senate .
answer: Congress has impeached and convicted officials, mostly for alleged crimes committed while in office, though there have been a few cases of convictions for prior crimes. The  House of Representatives impeached Andrew Johnson and Bill Clinton, they are the only two presidents to have been successfully impeached, but both were later acquitted by the Senate.