I would guess that THEY wanted pardons for jailed members. Maybe even a re-entry for Lucky.
Lucky was almost two years dead when JFK was killed. But you're certainly entitled to the rest of your theory.
Also got to consider that JFK got into office on January 10th, 1961.....Lucky died January 26, 1962.
Since LCN had all the politicians back then, they may have believed that on January 11, a presidential pardon was coming....That is dumb thinking if they did.
The only facts I have to even add this into my theory is, just like the Joe Bonanno situation. Once he 100% knew he wasn't getting back into the life, guess what time it is?
Time to give the middle finger to your supposed friends.
BOOK TIME!
I also believe Lucky was murdered.