U.S. President Barack Obama (R) escorts Pope Francis (L) down the West Wing colonnade walk during the arrival ceremony at the White House on September 23, 2015 in Washington, DC. The Pope begins his first trip to the United States at the White House followed by a visit to St. Matthew's Cathedral, and will then hold a Mass on the grounds of the Basilica of the National Shrine of the Immaculate Conception.<br /> Credit: Alex Wong / Pool via CNP
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