how many u.s. presidents have been impeached and tried by the senate?
View Full Document. Only two presidents in the nationâs history have been impeached and tried in the Sen- ate. The first was Andrew Johnson in 1868, who escaped conviction in the Senate by one vote, and the second was Bill Clinton in 1998, who escaped conviction by a wider margin. Each time Congress attempts to impeach a president and fails to remove him from office, it becomes more difficult to use it as a check.