The United States and Mexico are expected on Monday to announce that they have reached a preliminary deal on the North American Free Trade Agreement (NAFTA). U.S. and Mexican trade negotiators worked through the weekend and were meeting again on Monday morning at the Office of the U.S. Trade Representative to complete the deal on key provisions of the agreement. The next step is bringing Canada back into the talks to complete the modernization of the 24-year-old three-nation pact. President Trump has called NAFTA "the worst trade deal ever made" and said he would fix it so the United States...