When Giancana was in Mexico, I always figured that part of his racket was drug related.

And he was clipped, in part, for not kicking up a percentage. If true, then the Outfit was knowingly involved with drugs.

You shit-kicking, stinky, horse-manure-smelling motherfucker you! If you ever get out of line over there again, I'll smash your fucking head so hard you won't be able to get that cowboy hat on. You hear me? Fucking hick. -Nicky (Casino)