WASHINGTON, DC – JULY 4: (AFP-OUT) U.S. President Barack Obama (C) greets members of the crowd as he welcomes members of the White House staff and armed servicemen and women at an Independence Day barbeque on the South Lawn of the White House on July 4, 2011 in Washington, D.C. Obama hosted the barbeque for members of the armed services and White House staff and their families. (Photo by Kevin Dietsch-Pool/Getty Images)