From Fox Business:
Mexico's president on Thursday scrapped a planned summit with Donald Trump in the face of insistent tweets from the U.S. president demanding Mexico pay for a border wall, a deepening spat that threatens Mexican efforts to salvage trade ties.
Taking a page out of Trump's playbook, President Enrique Pena Nieto fired the salvo on Twitter, after Trump's call for Mexico to foot the bill for his planned wall prompted a groundswell of calls in Mexico for next week's meeting to be called off.
Trump said in a Twitter message earlier on Thursday that his Mexican counterpart should cancel his scheduled visit to Washington if Mexico refuses to pay for the wall that he has ordered constructed along the border. Trump views the wall, a major promise during his election campaign, as part of a package of measures to curb illegal immigration.