George W. Bush may unseat James Buchanan as the worst ever President in the history of the US.   Buchanan, the 15th President, probably committed treason, had the most corrupt administration in history (till now?) and more than likely was gay according to Jean Clark, his latest biographer.  However, an informal poll of historians by History News Network at George Mason University and reported in Yahoo News by Richard Reeves, raises hopes that ole "bring em on" Dubya, could possibly take the dubious and well deserved last place dishonor.