CIA has hired the Cosa Nostra before. That was the whole Bay of Pigs disaster. Kennedy fired the director of CIA, Kennedy never gave approval.
Which led to conspiracy of payback after Kennedy was killed. As Castro wanted revenge and to kill Kennedy thinking Kennedy had ordered his assassination.
Course we know how big a conspiracy this all became.
Robert Kennedy went after the Mafia locking them up, using Rico laws and wiretaps to bust things up. From a released wiretap is the very first time the outside people heard the ritual of a guy becoming a "made man" on tape.
So later Robert runs for Pres and he's killed, but by a Palestinian Sirhan Sirhan, but so many coincidences noone will ever know.
When the Cosa Nostra says Omertà, they fucking mean omertà. So who knows.
BTW the current leaders or "Dons" of the 5 families
Bonanno: boss – Michael Mancuso (Acting Boss - Thomas DiFiore)
Colombo: boss – Carmine Persico, (Acting Boss – Andrew Russo)
Gambino: boss - Frank Cali
Genovese: boss – unknown, (Acting Boss: Daniel Leo)
Lucchese: boss – Victor Amuso, (Acting Boss: Steven Crea)