Pope Francis is flanked by Mexico's President Enrique Pena Nieto, and first lady Angelica Rivera, during a farewell ceremony at the Abraham Gonzalez International Airport in Ciudad Juarez, Mexico, Wednesday, Feb. 17, 2016. Francis returned to Italy after a five-day visit in Mexico. His plane took off from the border city of Ciudad Juarez after night fell Wednesday. (AP Photo/Ivan Pierre Aguirre)