Mexico's President Enrique Pena Nieto winks at guests during the annual commemoration of the "March of Loyalty" at Chapultepec Castle in Mexico City, Thursday, Feb. 9, 2017. President Donald Trump warned Pena Nieto in a phone call that he was ready to send U.S. troops to stop "bad hombres down there" if Mexico's military can't control them, the AP learned last week. (AP Photo/Rebecca Blackwell)