Enrique Pena Nieto, Mexico's president, left, looks at Donald Trump, 2016 Republican presidential nominee, during a joint conference in Mexico City, Mexico, on Wednesday, Aug. 31, 2016. The meeting of Trump and Pena Nieto will address economics, jobs, Mexican drug cartels, the flow of drugs, cash and arms, and the positioning of the Western hemisphere toward Asia, including the challenges that a rising China poses to both Mexico and the United States. Photographer: Susana Gonzalez/Bloomberg via Getty Images

Enrique Pena Nieto, Mexico's president, left, looks at Donald Trump, 2016 Republican presidential nominee, during a joint conference in Mexico City, Mexico, on Wednesday, Aug. 31, 2016. The meeting of Trump and Pena Nieto will address economics, jobs, Mexican drug cartels, the flow of drugs, cash and arms, and the positioning of the Western hemisphere toward Asia, including the challenges that a rising China poses to both Mexico and the United States. Photographer: Susana Gonzalez/Bloomberg via Getty Images