President Barack Obama welcomes British Prime Minister David Cameron during an official 

President Barack Obama welcomes British Prime Minister David Cameron during an official arrival ceremony on the South Lawn of the White House in Washington, Wednesday, March 14, 2012. (AP Photo/Charles Dharapak)
Associated Press
President Barack Obama welcomes British Prime Minister David Cameron during an official arrival ceremony on the South Lawn of the White House in Washington, Wednesday, March 14, 2012. (AP Photo/Charles Dharapak)
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