WASHINGTON, DC – MARCH 14: (L-R) Samantha Cameron, First lady Michele Obama, British Prime Minister David Cameron, and U.S. President Barack Obama, walk into the North Portico of the White House before attending a state dinner March 14, 2012 in Washington, DC. Earlier in the day, Prime Minter Cameron participated in a joint press conference with President Obama, topics included Afghanistan, Syria and Iran. (Photo by Mark Wilson/Getty Images)