<a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Pope+Francis&family=editorial&specificpeople=2499404 ng-click='$event.stopPropagation()'>Pope Francis</a>, center, <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Enrique+Pena+Nieto&family=editorial&specificpeople=5957985 ng-click='$event.stopPropagation()'>Enrique Pena Nieto</a>, Mexico's president, right, and Pena Nieto's wife, <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Angelica+Rivera&family=editorial&specificpeople=4327597 ng-click='$event.stopPropagation()'>Angelica Rivera</a>, left, stand during the welcoming ceremony at The National Palace in Mexico City, Mexico on Saturday, Feb. 13, 2016. <a gi-track='captionPersonalityLinkClicked' href=/galleries/search?phrase=Pope+Francis&family=editorial&specificpeople=2499404 ng-click='$event.stopPropagation()'>Pope Francis</a> is scheduled to celebrate mass at the Basilica of Guadalupe on Saturday night during his trip to Mexico which runs through Wednesday. Photographer: Susana Gonzalez/Bloomberg via Getty Images