1965 FBI memo says mafia rumored to want to use Sinatra to set up Kennedys in sex scandal

WASHINGTON - An informant told the FBI in 1965 that it was rumored, though never substantiated, that mafia bosses hoped to use associates of entertainer Frank Sinatra to ensnare brothers Robert and Edward M. Kennedy in compromising positions with women in retaliation for a crackdown on organized crime.