No way. Absolutely not. Middle America wouldn't have taken to someone who just naturally looked like what Hoffa was; a slimeball. He once even bragged that he nad never read a book from cover to cover; who wants a president like that?
Next to impossible, unless he gets appointed to be the Secretary of Labor, and everyone from there on Up gets assassinated or offed, like in a Nuclear war, and Hoffa's the Designated Survivor, there's no way that'd happen.