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. 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).