U.S. Olympic 400m sprint gold medalist Sanya Richards-Ross (L) takes a picture with U.S. President Barack Obama as the 2012 U.S. Olympic and Paralympic teams visit the White House in Washington, September 14, 2012. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS SPORT OLYMPICS TPX IMAGES OF THE DAY)
U.S. Olympic 400m sprint gold medalist Sanya Richards-Ross (L) takes a picture with U.S. President Barack Obama as the 2012 U.S. Olympic and Paralympic teams visit the White House in Washington, September 14, 2012. REUTERS/Jonathan Ernst (UNITED STATES - Tags: POLITICS SPORT OLYMPICS TPX IMAGES OF THE DAY)
