“The United States Mexico Canada Agreement (USMCA) is an updated version of the nearly 25-year-old, trillion-dollar North American Free Trade Agreement (NAFTA). It includes major changes on cars and new policies on labor and environmental standards, intellectual property protections, and some digital trade provisions.”
https://www.vox.com/2018/10/3/17930092/usmca-mexico-nafta-trump-trade-deal-explained