U.S. Democratic presidential candidate Senator Barack Obama (D-IL) speaks during a campaign stop in Boone, Iowa

 
U.S. Democratic presidential candidate Senator Barack Obama (D-IL) speaks during a campaign stop in Boone, Iowa
U.S. Democratic presidential candidate Senator Barack Obama (D-IL) speaks during a campaign stop in Boone, Iowa December 31, 2007. REUTERS/Keith Bedford (UNITED STATES)