I can't think of any politicians who became billionaires after being a US politician. Certainly some (rather famous) examples of billionaires who ran for office

I can't think of any politicians who became billionaires after being a US politician. Certainly some (rather famous) examples of billionaires who ran for office but the richest member of Congress is worth like a quarter of a billion dollars. Are there really no EU politicians worth that kind of money? There must be some descended-from-royalty members of Parliament somewhere.