Perhaps in-depth public accounting of all political contributions/favors/etc and the finances of all politicians who serve one or more consecutive terms? If you

Perhaps in-depth public accounting of all political contributions/favors/etc and the finances of all politicians who serve one or more consecutive terms? If you want to be a politician you have to submit to public scrutiny of your finances prior to and following your political career? I don't know really... But I think that might help weed out career politicians who rely on sources of dubious income.