"The 115th Congress faces policy issues related to the Trump Administration's renegotiation and modernization of the North American Free Trade Agreement (NAFTA). [...] The Trump Administration has made NAFTA renegotiation and modernization a prominent initial priority of its trade policy. [...] Congress will likely continue to be a major participant in shaping and potentially considering an updated NAFTA. Key issues for Congress in regard to the renegotiation or modernization include the constitutional authority of Congress over international trade, its role in revising or withdrawing from the agreement, the U.S. negotiating objectives, the impact on U.S. industries and the U.S. economy, the negotiating objectives of Canada and Mexico, and the impact on broader relations with Canada and Mexico. The outcome of these negotiations will have implications for the future direction of U.S. trade policy under President Trump."
CRS Report for Congress, R44981
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html