Don't know for sure, but he certainly had the hots for JFK 1. Peter Lawrence was married to that freak clan and was a Rat Packer.
Frankie ended up getting pissed at the democrats for two things: they didn't like him hanging around when RFK was going after Hoffa's mob ties big time and they didn't like Sammy showing up with Kim Novak or another white babe in tow; a lot of democrats weren't too keen on the "race mixin'."