Clinton and Bush, Part I
Bill Clinton appears next to then-President George H.W. Bush in an ad for a PBS special during the 1992 presidential election. Nearly 16 years later, both are still involved in campaign politics. Bush has endorsed presumptive Republican nominee Sen. John McCain (Ariz.) and Clinton, of course, has been on the campaign trail with his wife, Sen. Hillary Rodham Clinton (D-N.Y.).