"When the North American Free Trade Agreement (NAFTA) was negotiated more than two decades ago, textiles and apparel were among the industrial sectors most sensitive to the agreement's terms. NAFTA, which was implemented on January 1, 1994, has encouraged the integration of textile and apparel production in the United States, Canada, and Mexico. For example, under NAFTA's 'yarn-forward' rule of origin, textiles and apparel benefit from tarifffree treatment in all three countries if the production of yarn, fabric, and apparel, with some exceptions, is done within North America. The United States maintains a bilateral trade surplus in yarns and fabrics with its NAFTA partners. In 2016, the United States had a $4.1 billion surplus in yarns and fabrics and a positive balance of around $720 million in made-up textile products (such as home textiles and furnishings) with Canada and Mexico. U.S. exports of yarns and fabrics shipped to Mexico and Canada were valued at close to $6 billion last year. In apparel, the United States had a trade surplus with Canada of $1.4 billion and a trade deficit with Mexico of $2.7 billion in 2016."
CRS Report for Congress, R44998
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html