The North American Free Trade Agreement (NAFTA) was implemented on January 1st, 1994 and is an agreement to remove both tariffs and investment barriers between the United States, Canada, and Mexico, as well as encourage further trade. NAFTA incorporates the previous 1989 agreement between the United States and Canada to remove tariffs on agricultural trade. Mexico and Canada had a separate agreement on agricultural products that eliminated most of the tariffs over a fifteen year period. The full provisions of the NAFTA agreement, including the elimination of all tariffs, were implemented fourteen years after the first signing of NAFTA on January 1st, 2008.