CRS report via Library of Congress – The President’s Authority to Withdraw the United States from the North American Free Trade Agreement (NAFTA) Without Further Congressional Action, March 5, 2019: “…This report examines the President’s authority to terminate the United States’ international obligations under NAFTA without further action from Congress. It also examines whether the NAFTA Implementation Act, the primary federal statute that implements the agreement in domestic law, would remain in effect if the President successfully terminated U.S. obligations under the agreement. In analyzing these issues, the report focuses on three related questions: (1) whether, under international law, the President may terminate U.S. international obligations under NAFTA without congressional approval; (2)whether, under domestic law, the President, relying on constitutional or statutory authority, may terminate U.S. international obligations under NAFTA unilaterally; and (3) whether the NAFTA Implementation Act would remain in effect if the President successfully terminated U.S. international obligations under the agreement…”