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. The agreement between the United States, Mexico and Canada is based on the North American Free Trade Agreement (NAFTA), which entered into force on January 1, 1994. This Agreement has been the result of more than a year of negotiations, including possible U.S. tariffs against Canada and the possibility of separate bilateral agreements.  National procedures for ratifying the agreement in the United States are governed by the legislation of the Trade Promotion Authority, also known as the Fast Track Authority. The United States, Mexico and Canada have reached an agreement to modernize the 25-year-old NAFTA into a high-level agreement of the twenty-first century. The new agreement between the United States, Mexico and Canada (USMCA) will support mutually beneficial trade that will lead to freer markets, fairer trade and robust economic growth in North America. One of President Trump`s main goals in the renegotiations is to ensure that the deal benefits American workers. The United States, Mexico and Canada have agreed on a laboratory chapter that introduces work obligations at the heart of the agreement, makes them fully enforceable and constitutes the strongest provisions of a trade agreement. On June 19, 2019, the Senate of Mexico ratified the agreement (114 yes, 3 no, 3 abstentions).
 Mexico`s ratification procedure will be completed when the President announces ratification in the Federal Register. Reuters. „The Canadian parliament is rushing to ratify the USMCA trade pact.“ Called June 30, 2020. Robert E. Lighthizer, the U.S. Trade Representative, presented to Congress a draft statement on the administrative measures necessary to implement the Agreement between the United States, Mexico and Canada (USMCA and the new NAFTA), pursuant to the Presidential Trade Promotion Authority (TPA) Act 2015. The project will submit USMCA enforcement legislation to Congress after 30 days, or after June 29.