List of impeachment investigations of United States federal officials

Numerous federal officials in the United States have been threatened with impeachment and removal from office. Despite numerous impeachment investigations and votes to impeach a number of presidents by the House of Representatives, only three presidents in U.S. history have had articles of impeachment approved: Andrew Johnson, Bill Clinton, and Donald Trump (twice), all of which were acquitted in the Senate. Impeachment proceedings against both John Tyler and Richard Nixon began and made it out of committee, but Nixon resigned before the actual debate on the floor of the House began. To date, no president impeached by the House of Representatives has ever been removed from office by the Senate.