Gambling 911 – Las Vegas casino magnate Steve Wynn insists he did not call US President Barack Obama an “a**hole” during a heated argument last month while having dinner with Hollywood actor George Clooney. Wynn accused Clooney, who stormed out of the Las Vegas restaurant following the alleged remarks, as having been “a little into the tequila”.  He also branded the Ocean’s Eleven star as “mollycoddled”. Clooney quickly responded to Wynn’s remarks via People.com: “I will not let his version of the truth go unchallenged. He now says he didn’t call the president an ‘a******.’ That is false. He bellowed…