I want to add something about the Giancana situation...yes Giancana was a muppet but the Chi Outfit made a LOT of money and international connections during Mooneys reign,so the real boss of the Outfit after Capone till 1972 was RICCA.After Ricca's death a lot of his proteges were eliminated,including Giancana for what ever reasons.

Mongol General: Conan, what is best in life?

Conan: To crush your enemies, see them driven before you, and to hear the lamentations of their women.