President Barack Obama and first lady Michelle Obama arrive to welcome Britain's Prime Minister David Cameron and his wife Samantha Cameron to the White House prior to a State Dinner, Wednesday, March... more 
President Barack Obama and first lady Michelle Obama arrive to welcome Britain's Prime Minister David Cameron and his wife Samantha Cameron to the White House prior to a State Dinner, Wednesday, March 14, 2012, in Washington. (AP Photo/Susan Walsh) less 
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Tue, Jan 8, 2013 2:00 PM EST