The Clinton administration negotiated with Canada and Mexico a subsequent environmental agreement, the North American Agreement on Environmental Cooperation (NAAEC), which resulted in the creation of the Commission for Environmental Cooperation (CEC) in 1994. In order to dispel fears that NAFTA, the first regional trade agreement between a developing country and two industrialised countries, would have a negative impact on the environment, the Commission was tasked with carrying out an ongoing ex-post environmental assessment. It created one of the first ex-post frameworks for the environmental assessment of trade liberalization, which aimed to provide a certain amount of evidence regarding the initial assumptions about NAFTA and the environment. such as the fear that NAFTA will create a “race to the downside” in environmental regulation between the three countries or that NAFTA will put pressure on governments to strengthen their environmental protection.  The CEC organized four symposia to assess the environmental impact of NAFTA and commissioned 47 papers on the subject from leading independent experts.  The impetus for a North American free trade area began with the United States. President Ronald Reagan, who made the idea part of his campaign by announcing his candidacy for president in November 1979.  Canada and the United States signed the Canada-U.S. Free Trade Agreement in 1988, and shortly thereafter, Mexican President Carlos Salinas de Gortari decided to address U.S. President George H. W.
Bush proposes a similar deal to make foreign investment after the Latin American debt crisis.  When the two leaders began negotiations, the Canadian government led by Prime Minister Brian Mulroney was concerned that the benefits obtained by Canada through the Canada-U.S. Free Trade Agreement would be undermined by a bilateral agreement between the United States and Mexico and asked to become part of the U.S.-Mexico talks.  Following diplomatic negotiations in 1990, the Heads of State or Government of the three nations signed the agreement in their respective capitals on December 17, 1992.  The signed agreement then had to be ratified by the legislature or parliament of each country. The U.S. Chamber of Commerce wrote to NAFTA the increase in U.S. trade in goods and services with Canada and Mexico, which rose from $337 billion in 1993 to $1.2 trillion in 2011, while the AFL-CIO awarded the deal to sending 700,000 U.S.
manufacturing jobs to Mexico.  From the very beginning of the negotiations, agriculture has been a controversial topic within NAFTA, as has been the case for almost all free trade agreements signed under the WTO. . . .