The United States-Mexico-Canada Agreement (USMCA) is a trilateral trade pact that came into effect on July 1, 2020, replacing the North American Free Trade Agreement (NAFTA). It sets rules for trade, investment, and economic cooperation among the U.S., Mexico, and Canada, covering areas such as tariffs, labor rights, environmental protections, and digital trade. The agreement aims to modernize trade relations and ensure fair competition across North America.