8. Harry Truman
You may be surprised to find out that Truman has made this list of most corrupt US Presidents in history, mainly because of his extensive contributions to the country such as fighting for civil rights, approving the dropping of the atomic bombs in order to end the war and potentially save millions of lives, and beginning an internationalist policy rather than the isolationist one the US had been following. However, it is his ascent to the presidency that has led to his placement on this list. He was backed by notorious corrupt politician Tom Pendergast, who backed Truman through means which would have been decried today, such as the bribing of officials.