If the Trans-Pacific Partnership of Origin (TPP) were to enter into force, existing agreements, such as NAFTA, would be reduced to provisions that do not conflict with the TPP or require greater trade liberalization than the TPP.  However, only Canada and Mexico would have the prospect of becoming members of the TPP after U.S. President Donald Trump withdrew the United States from the agreement in January 2017. In May 2017, the remaining 11 members of the TPP, including Canada and Mexico, agreed to pursue a revised version of the trade agreement without U.S. participation.  A central theme for the 115th Congress is the direction of U.S. trade policy under the Trump administration, particularly the prospective renegotiation of NAFTA. Congress could consider how NAFTA could be modernized and renegotiated, the role of Congress in future renegotiations, the negotiating positions of Mexico and Canada, and the consequences of a possible EXIT from NAFTA. Congress could also consider new „21st Century“ issues raised in recent U.S. free trade agreements, such as the U.S.-Korea Free Trade Agreement and the TPP, and whether these could be potential NAFTA discussions. If the United States withdraws completely from NAFTA, it could lead to serious disruptions in major North American production chains and job losses in all three countries. On the other hand, depending on the decision of the President and Congress, there may be opportunities to verify the successes of NAFTA and to check where it has not met expectations. Traditionally, Canada was the largest buyer of U.S.
exports and a supplier of U.S. imports; However, the actions of both values peaked before the free trade agreement. Canada purchased 23.5% of U.S. exports in 1987 and reached this figure in 2005, but since then it has fallen to 18.3% in 2016. Traditionally, Canada was the largest supplier of U.S. imports and peaked at 20.6% in 1984 (20.6%, but then fell to 12.6% in 2016). China supplanted Canada in 2007 as the largest supplier of U.S. imports, and Mexico supplanted Canada in 2015.