[2] The officeholder leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces.[3] Since the office was established in 1789, 45 men have served in 46 presidencies. The first president, George Washington, won a unanimous vote of the Electoral College;[4] one, Grover Cleveland, served two non-consecutive terms and is therefore counted as the 22nd and 24th president of the United States, giving rise to the discrepancy between the number of presidencies and the number of persons who have served as president.[5] The incumbent president is Joe Biden.[6]
The presidency of William Henry Harrison, who died 31 days after taking office in 1841, was the shortest in American history.[7] Franklin D. Roosevelt served the longest, over twelve years, before dying early in his fourth term in 1945. He is the only U.S. president to have served more than two terms.[8] Since the ratification of the Twenty-second Amendment to the United States Constitution in 1951, no person may be elected president more than twice, and no one who has served more than two years of a term to which someone else was elected may be elected more than once.