[["The North America Free Trade Agreement, or NAFTA, was signed by leaders of the United States, Canada, and Mexico, on December 17, 1992 and went into effect January 1, 1994.", 37.0], ["January 1, 1994", 15.0], ["The North American Free Trade Agreement between Canada, The United States, and Mexico, commonly referred to as NAFTA, was signed in 1993, but the agreement didn't become active until January 1, 1994.", 5.0]]
when was nafta signed into law
history