This a List of Presidents of the United States. The President of the United States is the head of state and the head of government of the United States. As chief of the executive branch and head of the federal government as a whole, the Presidency is the highest political official position in the United States by influence and recognition. The President is also the Commander-in-Chief of the U.S. armed forces. The President is indirectly elected to a four year term by an Electoral College. Since the ratification of the Twenty-second Amendment to the U.S. Constitution in 1951, no person may be elected to the office of the President more than twice.