The second parallel agreement is the North American Environmental Cooperation Agreement (NAAEC), which established the Commission for Environmental Cooperation (CEC) in 1994. The CEC is responsible for strengthening regional cooperation in the environmental field, reducing potential trade and environmental conflicts and promoting effective enforcement of environmental legislation. It also facilitates public cooperation and participation in efforts to promote conservation, protection and improvement of the North American environment. It consists of three main components: the Council (Minister of the Environment), the Joint Advisory Committee of Governments (JPAC) and the Secretariat, which is headquartered in Montreal. It has an annual budget of $9 million, with Canada, Mexico and the United States contributing $3 million per year and settled by consensus (non-majority). NAFTA has had three major advantages. U.S. food prices were lower due to duty-free imports from Mexico. Oil imported from Canada and Mexico has prevented the rise in gas prices. NAFTA has also increased trade and economic growth for all three countries. The agreement came into force under President Bill Clinton, who signed the agreement himself on December 8, 1993. The trade agreement came into force in January 1994.
Canada`s trade and investment relations with Mexico have grown strongly since NAFTA came into force. In addition, Canada welcomes approximately 20,000 agricultural workers each year through the seasonal and agricultural labour program, often cited as a model of international occupational mobility agreements. Mexico`s demographic and economic outlook indicates even stronger growth in trading exchanges. The passage of NAFTA has removed or removed barriers to trade and investment between the United States, Canada and Mexico. The impact of the agreement on issues such as employment, the environment and economic growth has been the subject of political controversy. Most economic analyses have shown that NAFTA has been beneficial to North American economies and the average citizen, but has been detrimental to a small minority of workers in sectors subject to trade competition.   Economists have estimated that the withdrawal from NAFTA or the renegotiation of NAFTA, in a way that would have created restored trade barriers, would have affected the U.S. economy and cost jobs.    However, Mexico would have been much more affected, both in the short term and in the long term, by the loss of jobs and the reduction of economic growth.  In a 60-minute interview in September 2015, presidential candidate Donald Trump called NAFTA “the worst trade deal ever approved in [the United States] and said that if elected, “he would either renegotiate or we would break it.”   Juan Pablo Castaen [es], chairman of the trade group Consejo Coordinador Empresarial, expressed concern about the renegotiations and the desire to focus on the automotive industry.  A number of trade experts have stated that abandoning NAFTA would have a number of unintended consequences for the United States, including limited access to its key export markets, lower economic growth and higher prices for gasoline, cars, fruits and vegetables.
 Members of the Mexican private initiative noted that many laws needed to be adapted by the U.S. Congress to eliminate NAFTA. Finally, this would give rise to complaints from the World Trade Organization.  The Washington Post noted that a review of academic literature by the Congressional Research Service concluded that “the overall net effect of NAFTA on the United States.