George Clooney has become one of Barack Obama's most high-profile backers, calling him several times a week to offer advice on body language, presentation and policy. Hollywood star Clooney, 47, struck up a close relationship with Mr Obama and is now in regular contact by phone, text and email, according to reports. Democratic sources claim the Oscar-winner has been sharing his views on policy, urging Mr Obama to take a more "balanced" stance on US relations with Israel. But one Democratic insider claims their relationship could be "very risky" for Mr Obama's election chances. "George is pro-Palestinian. And he is...