Graffiti artist Mauro Palotta says Pope Francis is the only world leader who stands on the side of the people. Sylvia Poggoli/NPR hide caption

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Pope Francis waves to faithful during the Angelus prayer from his studio overlooking St. Peter's Square at the Vatican on Sunday. President Obama will meet with the pope for the first time in March. Alessandra Tarantino/AP hide caption

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Pope Francis arrives for the Angelus noon prayer Sunday, during which he announced he would travel to Israel, the West Bank and Jordan on May 24-26. It would be Francis' first visit to the Holy Land. Alessandra Tarantino/AP hide caption

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This panoramic image (a composite of 9 photographs) shows part of the exterior of the bishop's residence in Limburg, Germany. Thomas Lohnes/Getty Images hide caption

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Pope Francis delivers a speech during a meeting with young people last month in Cagliari, Italy. Franco Origlia/Getty Images hide caption

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Pope Francis waves to faithful as he arrives for his weekly general audience in St. Peter's Square at the Vatican on Wednesday. Riccardo De Luca/AP hide caption

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