President Trump has once again warned that he could end NAFTA. 

So what actually is it? 

The North American Free Trade Agreement was signed in 1994 by the United States, Canada and Mexico to eliminate tariffs and establish the freest possible trade between the three countries. Renegotiating NAFTA was a key point during Donald Trump's Presidential campaign and officials in the U.S., Canada and Mexico began discussing the renegotiation process this past summer. Currently, talks are set to resume in November. 

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Editors' Pick: Originally published on October 17, 2017. 

This article was written by a staff member of TheStreet.