US President Barack Obama, first lady Michelle Obama, Queen Elizabeth II and Prince Philip, Duke of Edinburgh pose for a photograph as they arrive to 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.

Queen Elizabeth II shows U.S. President Barack Obama an exhibition of American items from The Royal Collection, in the Picture Gallery of Buckingham Palace on May 24, 2011 in London, England.