According to the Department of Homeland Security Immigration Statistics, 73,880 foreign skilled workers (64,633 Canadians and 9,247 Mexicans) were admitted to the United States for temporary employment under NAFTA (i.e. NT status) in fiscal year 2006 (October 2005-September 2006). In addition, 17,321 family members (13,136 Canadians, 2,904 Mexicans and a number of third-country nationals married to Canadians and Mexicans) entered the United States.  Given that DHS counts the number of new I-94 arrivals at the border and that TN-1 admission is valid for three years, the number of non-immigrants in NT status in the United States at the end of the fiscal year is approximately the number of admissions during the year. (A discrepancy may be caused by some NT participants leaving the country or changing status before their three-year admission period expires, while other immigrants admitted earlier may change their status to NT or TD or extend previously granted TN status). The debate on the impact of NAFTA on its signatory countries continues. While the United States, Canada and Mexico have experienced economic growth, higher wages and stronger trade since nafta, experts disagree on the extent to which the agreement has actually contributed to these benefits, if at all, to manufacturing employment. , immigration and consumer goods prices. The results are difficult to isolate and other important developments have occurred on the continent and around the world over the past quarter century. NAFTA`s record is economic growth and job creation in the middle class here in Canada and across North America. It has also paved the way for unprecedented economic integration between partners and created a platform where Canadian, American and Mexican companies do things together instead of just selling to each other. A „secondary agreement“ reached in August 1993 on the application of existing domestic labour law, the North American Convention on Labour Cooperation (NAALC) , was severely restricted. With regard to health and safety standards and child labour law, it excluded collective bargaining issues, and its „control teeth“ were only accessible at the end of a „long and painful“ dispute.
 The obligations to enforce existing labour law have also raised questions of democratic practice.  The Canadian anti-NAFTA coalition Pro-Canada Network suggested that guarantees of minimum standards in the absence of „extensive democratic reforms in the [Mexican] courts, unions and government“ would be of no use.  However, subsequent evaluations indicated that NAALC`s principles and complaint mechanisms „created a new space for princes to form coalitions and take concrete steps to articulate the challenges of the status quo and promote the interests of workers.“  NAFTA was effectively negotiated by Bill Clinton`s predecessor, George H.W. Bush, who decided that he wanted to continue negotiations on opening trade with the United States.