6. John F. Kennedy
Next on the list of most corrupt US Presidents in history is Kennedy that is one of the highest rated Presidents of all time, and I am sure many will be shocked by the fact that I have included him in the list of 11 most corrupt US Presidents in history. However, as books based on him have detailed, he was a selfish man who nearly caused nuclear warfare while not caring at all about his family, indulging in extra-marital affairs which could have jeopardized the country’s secrets. Furthermore, there are allegations that he had ties to the mob bosses in the US and would not have won the presidency had he not obtained their support.