Ronald Reagan first proposed a free trade agreement between the U.S. and Mexico in his 1980 presidential campaign. Since that time, The Heritage Foundation is proud of the role it has played in articulating President Reagan's vision of free trade in Latin America and around the world. Since the mid-1980s, Heritage analysts have been stressing that a free trade agreement with Mexico not only will stimulate economic growth in the U.S., but will make Mexico a more stable and prosperous country. Heritage has published over three dozen studies stressing the benefits of free trade in North America.
http://www.heritage.org/Research/TradeandForeignAid/EM371.cfmBush 41, too
Bush's government, along with the Progressive Conservative Canadian Prime Minister Brian Mulroney, spearheaded the negotiations of the North American Free Trade Agreement (NAFTA)
NAFTA Initialing Ceremony, October 1992. From left to right: (standing) President Carlos Salinas, President Bush, Prime Minister Brian Mulroney; (seated) Jaime Serra Puche, Carla Hills, Michael Wilson.
http://en.wikipedia.org/wiki/George_h.w._bush#NAFTA