During the 2016 US presidential election, Donald Trump`s campaign included a promise to renegotiate or cancel NAFTA if the renegotiations failed.  After his election, Trump made a number of changes that affect trade relations with other countries. The withdrawal from the Paris Agreement, the cessation of participation in the Trans-Pacific Partnership negotiations and the significant increase in tariffs with China were some of the measures he implemented and reaffirmed that he was serious in seeking changes to NAFTA.  Much of the debate about the virtues and mistakes of the USMCA is similar to the debate about all free trade agreements (SAAs), for example the nature of free trade agreements as public goods, potential violations of national sovereignty, and the role of commercial, labor, environmental, and consumer interests in shaping the language of trade agreements. On April 3, 2020, Canada informed the United States and Mexico that it had completed its domestic ratification process for the agreement.  Growing member states` objections to U.S. trade policy and various aspects of the USMCA have impacted the signature and ratification process. Mexico said they would not sign the USMCA if tariffs on steel and aluminum were maintained.  Based on U.S. results of November 6, 2018. . .