U.S President Barack Obama addresses the audience attending the "In Performance at the White House" event in Washington

 
U.S President Barack Obama addresses the audience attending the "In Performance at the White House" event in Washington
U.S President Barack Obama addresses the audience attending the "In Performance at the White House" event, at which music legends and contemporary artists perform to celebrate blues music and in recognition of Black History Month, in Washington February 21, 2012. REUTERS/Chris Kleponis