G-men interviewed Chicago mobster Jimmy "the Monk" Allegretti only a week after the November 22, 1963 assassination of President John F. Kennedy in order to determine whether he had any connections to Jack Ruby who on November 24 had killed supposed assassin Lee Harvey Oswald according to the recently released FBI file on Allegretti. Allegretti was the Rush Street crew boss who ran the vice rackets -- gay bars, strip clubs, whore houses, gambling dens -- from the mid-1940s to the mid-1960s on the Near North Side for Chicago Outfit underboss Ross Prio, and in the FBI interview he denied...