Under what circumstances may the president be impeached?

The President of the United States may be impeached by the House of Representatives for "Treason, Bribery, or other high Crimes and Misdemeanors" as stated in the Constitution. Impeachment is the first step in the process, and it does not necessarily mean the President will be removed from office. The Senate then conducts a trial to determine whether the President should be convicted and removed from office, requiring a two-thirds majority vote. Impeachment is a serious and rare constitutional process intended to hold the President accountable for any serious misconduct.