I've been in favor of making a federal housing complex in DC for legislators, staffers, and executive appointees; similar to base housing for the military. It removes one source of trouble/bribes and makes it easier for people without wealth to hold office.

Of course, I also think most legislative work in these times should be remote so they actually live in their districts and only head to DC for some things.

I’ve never heard it floated before but it seems like an easy fix.