You're doing a good job convincing me.
I do believe having a friend like him is an indictment on their character. Am I really supposed to believe the Clinton's and Obama's can take millions from a guy and claim they're all buddy buddy, but be actual strangers? That's a bigger stretch than to just assume they knew he was a creepy fuck but liked his money too much to care. I mean, I'd hope that at the very least an assistant or two for the Obamas and Clintons were tipped off by the FBI or SS given the years of rumors surrounding this guy.
Or perhaps those two simply exaggerated the friendship for the sake of looking cool. Sometimes it is the easy answer.