LONDON, ENGLAND – MAY 24: Camilla, Duchess of Cornwall, U.S. President Barack Obama, Queen Elizabeth II and Prince Philip, Duke of Edinburgh during a State Banquet in Buckingham Palace on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen Elizabeth II. During the trip they will attend a state banquet at Buckingham Palace and the President will address both houses of parliament at Westminster Hall. (Photo by Lewis Whyld – WPA Pool/Getty Images)