The Trump administration has driven a widening crack between the united front that Mexico and Canada maintained throughout the past year during the negotiations to rewrite the North American Free Trade Agreement. Mexican officials are getting increasingly impatient with Canada's refusal to assent to its bilateral deal with the U.S. and appear to be warming up to the idea of separate bilateral deals with its NAFTA trading partners."Mexicans feel like they are the ones that had to put up with more pressure from the United States, that the demands that they had to . . .