Mexican President Enrique Pena Nieto gives a foreign policy speech after US President Donald Trump vowed to start renegotiating North American trade ties, in Mexico City on January 23, 2017. Trump's vows to scrap the North American Free Trade Agreement to protect US jobs have raised concern in Mexico, which sends most of its exports to the United States. Pena Nieto's office said he congratulated Trump on taking office in a phone call Saturday and that both had agreed to open a "new dialogue." / AFP PHOTO / Ronaldo SCHEMIDT