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] THE 1992 CAMPAIGN - The Democrats - With Reservations, Clinton ... [PAR] Oct 5, 1992 ... American law allows Mr. Bush to sign the agreement as early as Dec. 17, 
although he could choose not to do so if he loses the election.