So what's the border between Chicago and New York?

Dont think there has ever been an offcial "border" between new york and chicago, not that there would be a need for one now seeing that new york has little to zero presence out west and the outfit doesnt seem to have much influence outside of illinois. But in the past most of the families to the east of chicago were represented by the genevese family on the commision while most of the families to the west of chicago were represented by the outfit on the commision, just generally speaking.

Farthest east Chicago goes is Indiana.

+1 Del

Central and west US outfit territory, Genovese the arbiter of the balance (This is referring to non commission represented families eg Buffalo). Though it's safe to say excluding philly and NE there is now no correspondence between NY and anyone or Chicago and anyone. Even and pointedly, NY and Chicago.

Hell, excluding localised capo inter-family sits downs to resolve isolated issues, the NY five doesn't correspond with each other anymore. Rackets are now localised, removing need for consultation or allocation.