Since the outfit is chicagos only cosa nostra family its not like he's got to worry about how doing it would effect anyone else's interests like how it would in ny.
I forget the exact context if the conversation, but he was just walking around the jail yard b*llshitting with his kid.
It's in Coen's Family Secrets.
The exact quote was something along the lines of "If you just got rid of 7 guys (or maybe "brought 7 guys into line") you could take over the whole thing. That's what it's come to."
