Rex Tillerson and Luis Videgaray Caso Press Conference [Getty Images]

MEXICO CITY, MEXICO - FEBRUARY 23: U.S. Homeland Security Secretary John Kelly shakes hands with Mexico's Foreign Relations Secretary Luis Videgaray as US Secretary of State Rex Tillerson looks on during a press conference at the Mexican Chancellery on February 23, 2017 in Mexico City, Mexico. Rex Tillerson and Luis Videgaray Caso met to discuss fronteer security issues, justice and commerce cooperation between Mexico and the US. (Photo by Miguel Tovar/LatinContent via Getty Images)

LatinContent WO Miguel Tovar