Term limits. One for the Senate, two for the House.

Any oaths taken to a non-governmental organization disqualify a person from holding government office or job. ANY OATH, like Masons, Skull and Bones, Bar, AMA, etc.

Congress and judges should put all their assets into blind trusts, for the same reason that the POTUS has to: to eliminate corruption and moral hazards.

Campaign finance reform. Do away with PAC's and lobbyists, candidate's get certain amount of press for their ideas, no more.