Amerikas president The incumbent president is Joe Biden. The presidency of William Henry Harrison, who died 31 days after taking office in , was the shortest in American history. Franklin D. Roosevelt served the longest, over twelve years, before dying early in his fourth term in He is the only U.S. president to have served more than two terms. 1 usa presidenter ranking 2 The president is elected to a four-year term via an electoral college system. Since the Twenty-second Amendment was adopted in , the American presidency has been limited to a maximum of two terms. The table provides a list of presidents of the United States. 3 president usa 1945 4 The president of the United States (POTUS) is the head of state and head of government of the United States. The president directs the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces. 5 List of presidents of the United States. (Redirected from List of Presidents of the United States) This list includes all people who have been sworn as President of the United States. 6 There have been 46 presidents of the United States. The youngest president was John F. Kennedy at age The oldest is Joe Biden at age The longest-serving president was Franklin D. Roosevelt, who died shortly into his fourth term in office. 7 president usa 2008 8 Joseph Robinette Biden jr. 9 Den og sittende presidenten er demokratiske Joe Biden, som ble valgt i presidentvalget i og som tiltrådte januar (Grunnen til at. 10 Thomas Jefferson The 3rd President of the United States James Madison The 4th President of the United States James Monroe The 5th President of the United States John Quincy Adams The 6th. 12