The United States-Mexico-Canada Agreement (USMCA) is a free trade agreement between the U.S., Mexico, and Canada that officially started on July 1, 2020. It replaced the North American Free Trade Agreement (NAFTA), which had been in place since 1994.
The USMCA established more stringent rules for how cars must be made to qualify for duty-free (tax-free) trade within North America. These rules were designed to encourage more manufacturing within the United States. Consistency in these rules allows automakers to optimize their production across borders while remaining globally competitive and lowering costs for consumers.