Step 1 : Introduction to the question "How many U.S Presidents have been impeached?"
Andrew Johnson and Bill Clinton are the only two presidents that have been impeached in U.S. history, and neither was convicted of the charges filed against him. The House impeached Andrew Johnson on February 24, 1868 for violating the Tenure of Office Act. Bill Clinton was impeached by the House of Representatives on December 19, 1998 on charges of perjury and obstruction of justice relating to the Monica Lewinsky scandal. Clinton was eventually acquitted by the Senate. Richard Nixon most likely would have been impeached had he not resigned his office on this day in 1974. Source: ThoughtCo.com