Look what has happened to Bill Clinton after leaving office.  It's said he's worth $100 million  (In USD, presumably).  Mostly this comes in the form of 'speaking fees':  As much as $700 in Nigeria. This is not-so-thinly-disguised bribery. One solution that would slow him down would be a 95% tax rate on an ex-president's income, at least that above $400,000 per year.