Canada, the United States and Mexico on Wednesday mounted a fierce defense of free trade, vowing to deepen economic ties despite an increasingly acrimonious debate about the value of globalization.
U.S. President Barack Obama and Mexican President Enrique Pena Nieto also took swipes at U.S. Republican presidential candidate Donald Trump, who has vowed to renegotiate or scrap the North American Free Trade Agreement (NAFTA) if he wins November's election.
"The integration of national economies into a global economy: that's here, that's done," Obama told a news conference at the end of a summit dubbed the . . .
