I believe most of what they do can be done from their home state using ZOOM or other software, but if they MUST live in the DC area, the home state should purchase a house, like a Governor’s mansion, plus pay electric/gas/upkeep, etc., and transportation, car/car with driver/ bus/etc. for the elect person to stay in while in the DC area thereby elimination any housing/transportation costs. Then their only costs are food, entertainment, clothing, etc… They should be, after all, employees of the State they represent, not the Federal Government.