Canadian authorities estimated that as of December 1, 2006, 24,830 U.S. citizens and 15,219 Mexican citizens were in Canada as “foreign workers.” These figures include both NAFTA participants and those who have entered under other provisions of Canadian immigration legislation.  In 2006, new arrivals of the foreign labour force amounted to 16,841 U.S. nationals and 13,933 Mexicans.  In accordance with NAFTA Article 102, there are 6 stated treaty objectives. Mr. Trudeau and Canadian Foreign Minister Chrystia Freeland announced that they would join the agreement if it was in Canada`s interest.  Freeland returned prematurely from his diplomatic trip to Europe and cancelled a planned visit to Ukraine to participate in the NAFTA negotiations in Washington at the end of August, D.C.  According to an August 31 Canadian press, published in the Ottawa Citizen, key supply management topics, Chapter 19, drugs, cultural exemption, sunset clause and de minimis thresholds.
 Two fundamental additions to NAFTA – the North American Labour Cooperation Agreement and the North American Agreement on Environmental Cooperation – have had a significant impact on the effectiveness of the agreement. The United States had a trade surplus with NAFTA countries of $28.3 billion for services in 2009 and a trade deficit of $94.6 billion (36.4% per year) in 2010. This trade deficit represented 26.8% of the total U.S. trade deficit.  A 2018 study on international trade published by the Center for International Relations identified irregularities in NAFTA trade patterns using network theory analysis techniques. The study showed that the U.S. trade balance was influenced by the potential for tax evasion in Ireland.  After Donald Trump`s presidential election, a number of trade experts said that an exit from NAFTA, as proposed by Trump, would have a number of unintended consequences for the United States, including limited access to the largest U.S. export markets, reduced economic growth and higher prices for gasoline, cars, fruits and vegetables.  The textile, agriculture and automotive sectors would be most affected.
  NAFTA has not eliminated regulatory requirements for companies wishing to act internationally, such as rules of origin and documentation obligations, that determine whether certain products can be negotiated under NAFTA. The free trade agreement also provides for administrative, civil and criminal sanctions for companies that violate the laws or customs procedures of the three countries. Many small U.S. companies under NAFTA depended on exporting their products to Canada or Mexico. According to the U.S. Trade Representative, this trade has supported more than 140,000 small and medium-sized enterprises in the United States.  Already in 1984, President Ronald Reagan passed the Trade and Customs Act, which gave the president special power to negotiate free trade agreements more quickly.