It's usually ethics-plus-something else -- often sex -- that makes a politician a rich target. Former Sen. John Ensign, R, the movie-star-handsome member from Nevada, resigned after he had an affair with a staff member's wife then tried to make up for it by helping the staffer in his new career as a lobbyist. Ensign even had his wealthy parents send the couple a check. Former Sen. Larry Craig, R-Idaho, infamous for being caught in a sex-sting operation in an airport restroom, tried to fight the charges by spending $200,000 in legal fees out of his campaign treasury, which he was then ordered to pay back. Before that was Rep. Randy "Duke" Cunningham, R-California, who kept track of his bribes on the back of a napkin, sold his house at an inflated price to a defense contractor and lived on a yacht.