At my university IFC did have authority off campus. You would register your off campus address with the university. Even by the early 2010s the rules were downright fascist which made them completely unproductive imo. The univesity argued any gathering of more than 3 people in a student org constituted a student org event. Therefore, a sober game of smash bros with four greek players in a single bedroom in an off campus would be considered an event worthy of registration and inspection from IFC (obviously the letter of this law would never be followed because it couldn't practically be followed nor even enforced, but served to shift liability should anything happen at the smash bros match). IFC would have hearings for incidents that would happen at places like bars all the time too (mostly underage drinking but the occasional fist fight as well).