Pope Francis Pope Francis

Vatican spokesman Rev. Federico Lombardi (right) is denying claims in Italian newspapers that Pope Francis has a benign brain tumor. The rumors are part of an attempt to undermine the pope, the Vatican says. Andrew Medichini/AP hide caption

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Andrew Medichini/AP

Nuns of the Missionaries of Charity pray last month at the Mother House, the Missionaries' head office, in Kolkata, India. Dibyangshu Sarkar/AFP/Getty Images hide caption

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Dibyangshu Sarkar/AFP/Getty Images

Kentucky's Rowan County Clerk Kim Davis speaks after receiving the "Cost of Discipleship" award at a Family Research Council conference last week in Washington, D.C. James Lawler Duggan/Reuters /Landov hide caption

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James Lawler Duggan/Reuters /Landov

Death row inmate Kelly Renee Gissendaner is seen in an undated picture from the Georgia Department of Corrections. Following repeated delays, Georgia carried out its first execution of a woman in 70 years on Tuesday evening. Handout/Reuters/Landov hide caption

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Handout/Reuters/Landov

In his congressional office, Rep. Bob Brady, D-Pa., drinks from the glass of water Pope Francis used during his speech to Congress. Stan White/U.S. Rep. Bob Brady's office via AP hide caption

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Stan White/U.S. Rep. Bob Brady's office via AP

Pilar Cedeno, of Hackensack, N.J., prays as Mass is celebrated by Pope Francis is broadcast to crowds on the Benjamin Franklin Parkway from inside the Cathedral Basilica of Saints Peter and Paul, on Saturday in Philadelphia. David Goldman/AP hide caption

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David Goldman/AP