U.S. President Barack Obama and first lady Michelle Obama disembark from Air Force One as they arrive at Dublin Airport to begin a 24-hour visit to the Republic of Ireland, in Dublin, Monday, May 23, 2011. President Barack Obama opens a six-day European tour with a quick dash through Ireland, where he will celebrate his own Irish roots and look to give a boost to a nation grappling with the fallout from its financial collapse. (AP Photo/Matt Dunham)
Britain's Queen Elizabeth II (right) is introduced to Enda Kenny (left), Ireland's taoiseach, or prime minister, by Irish President Mary McAleese at Aras An Uachtarain, the president's residence, in Phoenix Park in Dublin on Tuesday, May 17, 2011. The queen's visit is the first to the Republic of Ireland by a British monarch. (AP Photo/Tony Maxwell, Pool)
