one of the requirements of getting into congress or senate should be that when you are getting in AND out you should donate any sum of assets exceeding a couple millions. then anyone wanting to use government as a means of making money by licking the ass of powerful lobbies will mostly stay away. this will not completely eliminate the problem (there will still be people willing to work for lobbies for a couple mil) but will lessen the importance of wealth on politics greatly (along with not allowing donations to presidential candidates or organizations promoting them in anyway).