Until they demonstrate otherwise by passing laws insulating themselves and all other representatives from lobbyist influences, I'm going to proceed under the as

Until they demonstrate otherwise by passing laws insulating themselves and all other representatives from lobbyist influences, I'm going to proceed under the assumption that we, the people, elect representatives that win a popularity contest and can be only trusted to make decisions on behalf of the lobbyists that are most likely to help them get re-elected in the next election. That argument really is only valid if we have a functional democracy, which has slowly been dismantled by gerrymandering and lobbying.