The North American Free Trade Agreement (NAFTA) was implemented to promote trade between the United States, Canada and Mexico. The agreement, which eliminated the largest number of tariffs on trade between the three countries, entered into force on 1 January 1994. Many tariffs, particularly in the agriculture, textile and automotive sectors, were phased out between 1 January 1994 and 1 January 2008. One of the most affected agricultural sectors was the meat industry. Mexico became in 2004 the second largest importer of U.S. agricultural products by a small player in the U.S. export market before 1994, and NAFTA may have been an important catalyst for this change. The gap between Democrats and Republicans has widened: 60 percent of Democrats thought Mexico was doing fair trade, while only 28 percent of Republicans did.