Less than a year ago, the cordial spirit among members of the North American Free Trade Agreement reached a high-water mark at a plenum in June of its leaders dubbed the Three Amigos Summit. The next such meeting is unlikely to be as friendly. U.S. President Donald Trump has put NAFTA's foundations squarely in his crosshairs , and more than likely, the three sides will soon enter contentious negotiations over the structure of the trade deal — if it remains a trilateral pact at all. Trump's calls to revamp the deal have stoked concern in Mexico and Canada, whose economies are deeply intertwined with that of the United States.