XINHUA The United States-Mexico-Canada Agreement (USMCA) officially entered into force on Wednesday, July 1, replacing the 26-year-old North American Free Trade Agreement (NAFTA). “Today marks the beginning of a new and better chapter for trade between the United States, Mexico and Canada,” U.S. Trade Representative (USTR) Robert Lighthizer said in a statement, adding that the USMCA contains “significant improvements and