President Barack Obama waves as he arrives on the South Lawn of the White House after returning from Korea on Tuesday, March 27, 2012, in Washington. (AP Photo/Evan Vucci)

Associated Press
President Barack Obama waves as he arrives on the South Lawn of the White House after returning from Korea on Tuesday, March 27, 2012, in Washington.  (AP Photo/Evan Vucci)
President Barack Obama waves as he arrives on the South Lawn of the White House after returning from Korea on Tuesday, March 27, 2012, in Washington. (AP Photo/Evan Vucci)
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