On January 29, 2020, President Donald Trump signed the agreement between the United States, Mexico-Canada. Canada has not yet adopted it in its parliamentary body until January 2020. Mexico was the first country to ratify the agreement in 2019. The strengthening of border security in the wake of the 2001 terrorist attacks was a problem that has worried businesses in both countries. The issue has become less of a concern since the attacks, with the development of new technologies, registration, training and fewer rules. However, an average estimate of $10.5 billion for businesses resulting from delayed and uncertain travel times had an impact on trade.  U.S. Department of Commerce. Bureau of Census, foreign trade statistics. “New data updates 2005.” Available at www.census.gov/foreign-trade/statistics/. Appeal on April 17, 2006. It is clear that NAFTA continues to clarify political views on globalization and free trade in general.
Opposition to NAFTA has intensified, making it much more politically difficult to adopt other similar free trade agreements. This became clear in the summer of 2005, when the Central American Free Trade Agreement (CAFTA) stopped in Congress because of a lack of support. Two journalists, Dawn Gilbertson and Jonathan J. Higuera, who wrote in the Arizona Republic on the tenth anniversary of NAFTA, summed it up this way: “The reality of NAFTA at 10 years old is this: a story of winners and losers, divided largely by the workplace and what we do.” The same goes for the impact of NAFTA on small businesses. For some, it was an opportunity to grow and for others it was a challenge. The North American Free Trade Agreement (NAFTA) was implemented to promote trade between the United States, Canada and Mexico. The agreement, which removed most tariffs on trade between the three countries, came into force on 1 January 1994. Between 1 January 1994 and 1 January 2008, many tariffs – notably for agriculture, textiles and automobiles – were phased out.
U.S. trade relations with Canada are the second largest in the world after China and the United States. In 2016, trade in goods and services between the two countries amounted to $627.8 billion. U.S. exports were $320.1 billion, while imports were $307.6 billion. The United States has a trade surplus of $12.5 billion with Canada in 2016.  Since 1985, Canada has had an annual trade deficit with the United States in net trade in non-services.  Trade relations between the two countries affect all industries and are essential to the success of both countries, with each country being one of the other countries` main trading partners.
U.S. agricultural exports to Canada and Mexico quadrupled from $11 billion in 1993 to $43 billion in 2016. It accounted for 25% of total food exports and supported 20 million jobs. This trade has mobilized another $54.6 billion in business investment. NAICS has replaced the US Standard Industrial Classification (SIC) system, which has allowed companies to be systematically classified in an ever-changing economy.