Daily Caller – Sen. John McCain, who was caught by a Washington Post photographer playing online poker during the Syria debate, once sought to ban online gambling — and gambling proponents are accusing the Arizona Republican of dealing from the bottom of the deck. “John McCain not only opposed online gambling, he might have been the strongest critic of gambling in Congress,” Wayne Allyn Root, a successful Las Vegas odds maker, 2008 Libertarian vice presidential candidate, and prominent Mitt Romney supporter during the 2012 presidential campaign, told The Daily Caller. “Obama and McCain are masters of that politicians’ art form — ‘Do as…