In September 2018, the United States reached an agreement with Mexico and Canada to renegotiate the North American Free Trade Agreement (NAFTA). Once completed and implemented, the new U.S.-Mexico-Canada Agreement (USMCA) will further strengthen U.S. highly productive and integrated agricultural relationships with its North American partners, ensure preferential market access for U.S. exporters, and strengthen commitments to fair and science-based trade rules. The new agreement came into force on July 1, 2020. On March 1, 2019, many organizations representing the agricultural sector in the United States announced their support for the USMCA and asked Congress to ratify the agreement. They also called on the Trump administration to continue to support NAFTA until the new trade agreement is ratified.  On March 4, House Ways and Means President Richard Neal predicted a “very hard” path through Congress for the agreement.  Starting March 7, senior White House officials met with members of the Ways and Means House of Representatives, as well as moderate cackles from both parties, such as the Solver Caucus, the Tuesday Group and the Blue Dog Coalition, to seek ratification support. The Trump administration also withdrew from the threat to withdraw from NAFTA as negotiations with Congress continued.
 In the chapter “Health and Plant Health Measures” (SPS), the United States, Mexico and Canada agreed to strengthen disciplines for scientifically sound SPS measures, while ensuring that the parties respect their sovereign right to the protection of life, animals, plants and health. The provisions provide for greater transparency in the development and implementation of SPS measures; Promoting scientific decision-making Improve certification, regionalization and equivalency processes Conducting system-based audits Improving the transparency of import controls; cooperation actions to improve the compatibility of the measures. The new agreement would establish a new mechanism for technical consultation between the parties to resolve the issues. On April 24, 2020, U.S. Trade Representative Robert Lighthizer formally announced to Congress that the new trade agreement is expected to come into effect on July 1, 2020, and he also informed Canada and Mexico.   The Canadian government noted that “the results of CUSMA retain key elements of long-term trade relations and contain new and updated provisions to address 21st century trade issues and foster opportunities.” Canada and the United States have also agreed on strict rules to ensure fair and transparent management of tariff quotas to ensure that distributors can use them fully. On this occasion, Us Customs and Border Protection (CBP), the U.S. treaty implementation authority, established the USMCA Center to coordinate CBP`s implementation of the contract in the United States. According to CBP, the agreement modernizes “certain NAFTA provisions that reflect the evolution of 21st century technology and supply chain” and “provides more efficient trade, greater implementation and more economic opportunities for North America.” The USMCA calls for “new approaches to rules of origin, access to agricultural markets, digital trade and financial services” and aims to protect workers` rights in key industries and strengthen the protection of intellectual property rights. NAFTA has three primary dispute resolution mechanisms. Chapter 20 is the settlement mechanism for countries. It is often considered the least controversial of the three mechanisms, and has been maintained in its original form from NAFTA to the USMCA.
In such cases, complaints filed by USMCA Member States against the duration of the contract would be violated.  In Chapter 19, the justifications for anti-dumping or countervailing duties are managed. Without Chapter 19, the avenue of recourse for the management of these policies would be through the national legal system.