Sectoral chapters, including Chapter 12, on FDA-regulated products have not been considered in most previous trade agreements, including NAFTA. Therefore, the inclusion of these annexes by the USMCA is an innovation not only in U.S. trade policy, but also for international public health. The full text of the agreement between the United States, Mexico and Canada is available here. On November 30, 2018, the USMCA was signed as planned by the three parties at the G20 summit in Buenos Aires.   Disputes over labour rights, steel and aluminum prevented ratification of this version of the agreement.   Canadian Deputy Prime Minister Chrystia Freeland, U.S. Trade Representative Robert Lightizer, and Mexican Under-Secretary of State for North America Jesus Seade officially signed a revised agreement on December 10, 2019, ratified by the three countries on March 13, 2020. A new addition to the USMCA is the inclusion of Chapter 33, which covers macroeconomic policies and exchange rate issues.
This is considered important because it could set a precedent for future trade agreements.  Chapter 33 sets out requirements for currency and macroeconomic transparency that, in the event of a breach, would be grounds for litigation under Chapter 20.  The United States, Canada and Mexico currently meet all of these transparency requirements in addition to substantive policy requirements that comply with the international Monetary Fund`s articles.  The agreement is described differently by each signatory – in the United States, it is called the U.S.-Mexico-Canada Agreement (USMCA);   in Canada, it is officially known as the Canada-U.S.-Mexico Agreement (CUSMA) in English and the Canada-U.S.-Mexico Agreement (ACEUM) in French;  and in Mexico, tratado is called tratado between México, Estados Unidos y Canadé (T-MEC).   The agreement is sometimes referred to as “New NAFTA” with respect to the previous trilateral agreement for the successor, the North American Free Trade Agreement (NAFTA). The USMCA is expected to have a very small impact on the economy.  An International Monetary Fund (IMF) discussion paper published at the end of March 2019 stated that the agreement would have a “negligible” impact on the general economy.   The IMF study predicted that the USMCA “would have a negative impact on trade in the automotive, textile and clothing sectors, while achieving modest welfare gains, mainly due to improved access to the goods market, with a negligible impact on real GDP.”  The IMF study concluded that the economic benefits of the USMCA would be greatly improved if there was an end to Trump`s trade war (i.e., if the United States did so.