Hoffa was killed by underlings of Tony Provenzano and Tony Giacalone under orders from Mob Boss Russell Bufalino. Hoffa hopped into a car with Chuckie O'Brien and never seen again, his body burned in an incinerator at a mob run dump or crematorium.
The more I read the more that's what it looks like to me. So, "F" Scorsese for making everyone in America look up for a second to see if what he had to say was anything important ... and it was just not. It was a stupid Mafia comic book movie at a time when Scorsese himself was saying the comic book and super-hero movies are not really film. America has to let go of these old codgers and move on. If someone wants to make a movie about the Mafia, or the Teamsters/Unions they need to balance it on real facts, not some cheap trash book. Of course, if there was a lot of real consistent info on the Mafia it would be a threat to them, so perhaps the movie attests to a reality that perhaps America was taken over by a combination of organized crime and oligarchs ... like Russia is now. We just had a better media, and are a richer country.
Hmm - I kind of agree..... in that Scorsese didn't offer anything new with this film. It looked like a replica of his older films - the gangster stories, after a while, all begin to look the same, kind of like superhero films. So, while he is right about superhero films being bland.... he didn't have much to offer either.