U.S. President Barack Obama (back to camera) is hugged by Chicago Mayor Rahm Emanuel (R) next to entertainer Jennifer Hudson (C) after performers sing “Happy Birthday” to him to celebrate his 50th birthday before he delivers remarks at a Democratic National Committee (DNC) fundraiser at the Aragon Entertainment Center in Chicago August 3, 2011. REUTERS/Larry Downing (UNITED STATES – Tags: POLITICS ANNIVERSARY ENTERTAINMENT)