"On September 30, 2018, the United States and Canada reached an agreement for Canada to join the preliminarily agreed upon pact with Mexico to update and revise the North American Free Trade Agreement (NAFTA) and to rename it the U.S. - Mexico - Canada Agreement (USMCA). Pursuant to trade promotion authority (TPA), the preliminary agreement with Mexico was notified to Congress on August 31, 2018, in part to allow for the signing of the agreement prior to Mexico's president-elect Andreas Manuel Lopez Obrador taking office on December 1, 2018. This product provides preliminary comparative analysis between the two agreements."
CRS In Focus, IF10997
Congressional Research Service: https://crsreports.congress.gov/