The U.S., Canada, and Mexico signed this trade pact on Dec. 17, 1992, though it didn't go into effect until Jan. 1, 1994
[DOC] [TLE] NAFTA 20 years later: North American leaders announce summit ... [PAR] Aug 31, 2012 ... President Bill Clinton ushered it through Congress where it passed the ... Clinton 
signed it into law December 8, 1993, and NAFTA took effect ... American trilateral 
free trade agreement between Canada, Mexico, ...