A collapse of the North American Free Trade Agreement, which U.S. President Donald Trump has threatened to scrap, could create the a powerful disruption for U.S. farmers, who produce grains, meats and dairy products sold to Canada and Mexico. Farmers and exporters are fighting to preserve their exports at a time when Canada is finding customers in new markets. They also face strained relations between the United States and Mexico, who is a major buyer of U.S.
