** FILE **Democratic presidential hopeful U.S. Sen. Barack Obama D-Ill., and his daughters Malia, left, and daughter Sasha enjoy the Iowa State Fair in this Aug. 16, 2007, file photo in Des Moines, Iowa. The girls are fans of Hannah Montana and Beyonce, but think anything to do with Britney Spears and Paris Hilton is "yuck", Obama told a celebrity magazine. (AP Photo/M. Spencer Green, File)