Two power bases: Elmwood Park - Mostly infiltrated into legit business because boss John DiFronzo does not want to spend the rest of his life in prison. Cicero - standard blue collar mob rackets; gambling and juice loans.
That's it? Wow, I never did any research on Chicago...I'm happy that I didn't waste my time.
Boardwalk Empire must make them suicidal, given the power their ancestors had.