admits to an affair.
He defended straight couples' who are married from the fear that their loved one would dump them and marry a member of the same-sex once gay marriages were recognized but couldn't defend his marriage from an affair. Newt Gingrich, Bob Livingston, Bill Clinton (he did sign the ahem, "Defense of Marriage Act" into law), Gary Condit (for condemning Bill Clinton for his affair with Monica Lewinsky), David Vitter, Larry Craig and now Bob Ensign. Did I leave anyone out?
Note that he is admitting to this while the protests in Iran continue. I guess he didn't want the media to devote 24 hour news coverage to this scandal.