Pope Francis (R) and U.S. President Barack Obama (L) stand for the national anthem of the Holy See during the arrival ceremony at the White House
Pope Francis visit to Washington DC, America - 23 Sep 2015
(Rex Features via AP Images)
Pope Francis
Pope Francis reaches for a child from the popemobile that was brought to him, during a parade in Washington, Wednesday, Sept. 23, 2015, following a state arrival ceremony hosted by President Barack Obama at the White House. (AP Photo/Alex Brandon, Pool)
Pope Francis
Pope Francis holds the head of a small child as he leans from the popemobile during a parade in Washington, Wednesday, Sept. 23, 2015, following a state arrival ceremony hosted by President Barack Obama at the White House. (AP Photo/Alex Brandon, Pool)
Barack Obama, Pope Francis
President Barack Obama and Pope Francis stand at attention during the playing of the national anthems during a state arrival ceremony for the pope, Wednesday, Sept. 23, 2015, on the South Lawn of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)
Pope Francis, Donald Wuerl
Cardinal Donald Wuerl, archbishop of Washington, right, translates for Pope Francis as the Pope wishes he had more time to greet everyone following the midday prayer from the Liturgy of Hours, the daily form of prayer of the Catholic Church, with bishops from the U.S., Wednesday, Sept. 23, 2015, at the Cathedral of St. Matthew the Apostle in Washington. (AP Photo/Susan Walsh)
Jacqueline Burke, Mary Berchmans, Anne Francis, Sylvie Guerron
From left, Sister Anne Francis, Sister Mary Berchmans, Sister Jacqueline Burke and Sister Sylvie Guerron, back right, all members of the Sisters of the Visitation, tailgate as they wait for Pope Francis to arrive for his mass outside the Basilica of the National Shrine of the Immaculate Conception in Washington, Wednesday, Sept. 23, 2015. (AP Photo/Patrick Semansky)
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Pope Francis takes a photo with children whose parents work at the Lithuanian Embassy, outside the Apostolic Nunciature to the United States on September 23, 2015 in Washington, DC. AFP PHOTO/MOLLY RILEY (Photo credit should read MOLLY RILEY/AFP/Getty Images)
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Pope Francis takereceives a kiss, outside the Apostolic Nunciature to the United States on September 23, 2015 in Washington, DC. AFP PHOTO/MOLLY RILEY (Photo credit should read MOLLY RILEY/AFP/Getty Images)
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US President Barack Obama welcomes Pope Francis to the White House on September 23, 2015 in Washington,DC. President Barack Obama hosts Pope Francis at the White House for the first time Wednesday, warmly embracing the Catholic pontiff seen as both a moral authority and potent political ally. AFP PHOTO / VINCENZO PINTO (Photo credit should read VINCENZO PINTO/AFP/Getty Images)
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Pope Francis speaks along side US President Barack Obama at the White House on September 23, 2015 in Washington,DC. President Barack Obama hosts Pope Francis at the White House for the first time Wednesday, warmly embracing the Catholic pontiff seen as both a moral authority and potent political ally. AFP PHOTO / VINCENZO PINTO (Photo credit should read VINCENZO PINTO/AFP/Getty Images)
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Pope Francis greets well-wishers outside the Apostolic Nunciature to the United States on September 23, 2015 in Washington, DC. AFP PHOTO/MOLLY RILEY (Photo credit should read MOLLY RILEY/AFP/Getty Images)
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US President Barack Obama, First Lady Michelle Obama and Pope Francis wave during an arrival ceremony on the South Lawn of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
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US President Barack Obama and Pope Francis wave during an arrival ceremony on the South Lawn of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
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US President Barack Obama and Pope Francis shake hands during an arrival ceremony on the South Lawn of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
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US President Barack Obama talks with Pope Francis during a meeting in the Oval Office of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
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US President Barack Obama talks with Pope Francis during a meeting in the Oval Office of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
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US President Barack Obama talks with Pope Francis during a meeting in the Oval Office of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
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US President Barack Obama and Pope Francis walk through the Colonnade on their way to a bilateral meeting in the Oval Office of the White House on September 23, 2015 in Washington, DC. AFP PHOTO/MANDEL NGAN (Photo credit should read MANDEL NGAN/AFP/Getty Images)
Pope Francis Drives Parade Route Around D.C.'s National Mall
WASHINGTON, D.C. - SEPTEMBER 23: Spectators gather near the Ellipse to catch a glimpse of Pope Francis along the route his Popemobile will take near the White House, September 23, 2015 in Washington, DC. The Pope is on a three-day visit of Washington, D.C. as part of a larger visit to the U.S. (Photo by Allison Shelley/Getty Images)
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Buttons featuring Pope Francis are displyed for sale on a vendor's table near the Ellipse, September 23, 2015 in Washington, DC. The Pope is on a three-day visit of Washington, D.C. as part of a larger visit to the U.S. (Photo by Allison Shelley/Getty Images)
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Spectators gather near the Ellipse to catch a glimpse of Pope Francis along the route his Popemobile will take near the White House, September 23, 2015 in Washington, DC. The Pope is on a three-day visit of Washington, D.C. as part of a larger visit to the U.S. (Photo by Allison Shelley/Getty Images)
Pope Francis Meets President Obama At The White House
WASHINGTON, DC - SEPTEMBER 23: U.S. President Barack Obama (R) shakes hands with Pope Francis (L) 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. (Photo by Win McNamee/Getty Images)
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Pope Francis speaks during an arrival ceremony hosted by US President Barack Obama on the South Lawn of the White House in Washington, DC, September 23, 2015. More than 15,000 people packed the South Lawn for a full ceremonial welcome on Pope Francis' historic maiden visit to the United States. AFP PHOTO / JIM WATSON (Photo credit should read JIM WATSON/AFP/Getty Images)
Pope Francis Meets President Obama At The White House
WASHINGTON, DC - SEPTEMBER 23: Pope Francis (R) and U.S. President Barack Obama (L) stand for the national anthem of the Holy See 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. (Photo by Alex Wong/Getty Images)
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Pope Francis arrives for Midday Prayer at St. Matthews Cathedral in Washington, DC, on September 23, 2015. AFP PHOTO / VINCENZO PINTO (Photo credit should read VINCENZO PINTO/AFP/Getty Images)
Pope Francis Drives Parade Route Around D.C.'s National Mall
WASHINGTON, DC - SEPTEMBER 23: Pope Francis leans out and waves to the crowd as he rides in a popemobile along a parade route around the National Mall on September 23, 2015 in Washington, DC. Thousands of people gathered near the Ellipse to catch of glimpse of Pope Francis after he addressed an audience of 15,000 invited guests on the South Lawn of the White House during an official arrival ceremony with President Barack Obama. The Pope began 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. (Photo by Chip Somodevilla/Getty Images)
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Pope Francis waves from his 'Popemobile' to people who line his parade route along the National Mall September 23, 2015 in Washington, DC. Thousands of people gathered near the Ellipse to catch of glimpse of Pope Francis after addressed an audience of 15,000 invited guests on the South Lawn of the White House during an official arrival ceremony with President Obama.
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WASHINGTON, D.C. - SEPTEMBER 23: Pope Francis passes by a cheering crowd around the Ellipse as he does a tour with his Popemobile near the White House, September 23, 2015 in Washington, D.C. The Pope is on a three-day visit of Washington, D.C. as part of a larger visit to the U.S. (Photo by Allison Shelley/Getty Images)
Pope Francis Drives Parade Route Around D.C.'s National Mall
WASHINGTON, DC - SEPTEMBER 23: Pope Francis waves to the crowd as he rides in a popemobile along a parade route around the National Mall on September 23, 2015 in Washington, DC. Thousands of people gathered near the Ellipse to catch of glimpse of Pope Francis after he addressed an audience of 15,000 invited guests on the South Lawn of the White House during an official arrival ceremony with President Barack Obama. The Pope began 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. (Photo by Allison Shelley/Getty Images)
Pope Francis Drives Parade Route Around D.C.'s National Mall
WASHINGTON, DC - SEPTEMBER 23: Pope Francis waves to the crowd as he rides in a popemobile along a parade route around the National Mall on September 23, 2015 in Washington, DC. Thousands of people gathered near the Ellipse to catch of glimpse of Pope Francis after he addressed an audience of 15,000 invited guests on the South Lawn of the White House during an official arrival ceremony with President Barack Obama. The Pope began 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. (Photo by Allison Shelley/Getty Images)
Pope Francis Attends Midday Prayer At St Matthew The Apostle Church In DC
WASHINGTON, DC - SEPTEMBER 23: Pope Francis stands at the altar of the Blessed Sacrament Chapel for a private prayer before participating in the Midday Prayer Service at the Cathedral of St. Matthew on September 23, 2015 in Washington DC. The Pope began 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. (Photo by Mark Wilson/Getty Images)
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Pope Francis arrives at a midday prayer with US bishops at the Cathedral of St. Matthew the Apostle in Washington, DC, on September 23, 2015 on the second day of his six-day visit to the US.. AFP PHOTO/NICHOLAS KAMM (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
Pope Francis Drives Parade Route Around D.C.'s National Mall
WASHINGTON, DC - SEPTEMBER 23: Pope Francis waves to the crowd as he rides in a popemobile along a parade route around the National Mall on September 23, 2015 in Washington, DC. Thousands of people gathered near the Ellipse to catch of glimpse of Pope Francis after he addressed an audience of 15,000 invited guests on the South Lawn of the White House during an official arrival ceremony with President Barack Obama. The Pope began 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. (Photo by Chip Somodevilla/Getty Images)
Pope Francis Attends Midday Prayer At St Matthew The Apostle Church In DC
WASHINGTON, DC - SEPTEMBER 23: Pope Francis speaks to bishops during the midday prayer service at the Cathedral of St. Matthew on September 23, 2015 in Washington, DC. The Pope began 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. (Photo by Mark Wilson/Getty Images)
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Darry Seldana, an employee of Artuso Pastry, makes cookies with the Pope Francis' image on September 23, 2015 in New York. Artuso's Pastry recently received a single order for 10,000 cookies in Florida, adding to the 20,000 they're already fulfilling ahead of the Pope's visit to New York City. AFP PHOTO/WILLIAM EDWARDS (Photo credit should read William Edwards/AFP/Getty Images)
Pope Francis: Midday Prayer Service at the Cathedral of St. Matthew the Apostle
WASHINGTON, DC - SEPTEMBER 23: Pope Francis greets the U.S. Catholic Bishops during the Midday Prayer Service at the Cathedral of St. Matthew the Apostle September 23, 2015 in Washington, DC. The Pope began 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. (Photo by Toni L. Sandys-Pool/Getty Images)