Migrant Juan Carlos Vargas, from San Pedro Sala, Honduras, prays in a Catholic church in Tecun Uman, Guatemala, on the border with Mexico, Sunday, Jan. 20, 2019. When Pope Francis visits Panama this week, he arrives not only as the first Latin American pontiff to visit Central America but as perhaps the world's most prominent advocate for migrants at a time when migration has become a pressing political issue in the region and elsewhere. (AP Photo/Moises Castillo)