According to the Sierra Club, NAFTA has contributed to large-scale export-oriented agriculture, resulting in increased use of fossil fuels, pesticides and GMOs.  NAFTA has also contributed to environmentally harmful mining practices in Mexico.  It has prevented Canada from effectively regulating its oil sands industry and has created new legal opportunities for transnational companies to combat environmental legislation.  In some cases, environmental policy has been neglected as a result of trade liberalization; In other cases, NAFTA`s investment protection measures, such as Chapter 11, and measures to address non-tariff barriers to trade have threatened to discourage stronger environmental policy.  The most severe increases in pollution attributable to NAFTA were in the base metals, Mexican petroleum and transportation equipment sectors in the United States and Mexico, but not in Canada.  NAFTA was supplemented by two other regulations: the North American Agreement on Environmental Cooperation (NAAEC) and the North American Agreement on Labor Cooperation (NAALC). These tangential agreements should prevent companies from moving to other countries in order to use lower wages, more moderate health and safety rules and more flexible environmental rules. After Donald Trump`s presidential election, a number of trade experts said that exiting 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.  Democratic candidate Bernie Sanders, who opposed the Trans-Pacific Partnership trade agreement, called it “the continuation of other disastrous trade agreements such as NAFTA, CAFTA and normal, sustainable trade relations with China.” He believes that free trade agreements have led to the loss of American jobs and lower U.S. wages. Sanders said America needs to rebuild its production base with U.S. factories for well-paying jobs for the U.S. workforce, instead of relocating to China and elsewhere.    A 2014 study on the impact of NAFTA on U.S. trade employment and investment showed that the U.S. trade deficit with Mexico and Canada increased from $17.0 billion to $177.2 billion between 1993 and 2013 and supplanted 851,700 U.S. jobs.  The new “Access to the Market” chapter will more effectively support trade in industrial products between the United States, Mexico and Canada by removing provisions that are no longer relevant, updating key references and reaffirming commitments that were gradually included in the original agreement. In addition to the rules of origin mentioned above, there may be other ways to qualify your product: according to a 2012 study, with reduced NAFTA trade tariffs, trade with the United States and Mexico increased by only 11% in Canada compared to a 41% increase in the United States and 118% in Mexico. :3 In addition, the United States and Mexico benefited more from the rate reduction, with an increase in social benefits of 0.08% and 1.31%, with Canada recording a decrease of 0.06%. :4 This agreement goes beyond NAFTA 1.0 and the TPP by establishing procedures to streamline certification and verification of rules of origin and promote strong enforcement. These include new rules of cooperation and enforcement that help prevent tax evasion before it occurs. This paper proposes to amend U.S. Customs and Border Management (CBP) regulations by modernizing rules for customs brokers to coincide with the development of CBP`s business initiatives, including the Automated Business Environment (ACE) and the Centers of Excellence and Expertise (Centers).