Following diplomatic negotiations dating back to 1986 among the three nations, the leaders met in San Antonio, Texas, on December 17, 1992, to sign NAFTA. U.S. President George H. W. Bush, Canadian Prime Minister Brian Mulroney and Mexican President Carlos Salinas, each responsible for spearheading and promoting the agreement, ceremonially signed it. The agreement then needed to be ratified by each nation's legislative or parliamentary branch.
First paragraph Wiki NAFTA. Bummer