(FILES) This file photo taken on September 29, 2010 shows workers of TECMA, a cross-border plant (maquiladora) in Ciudad Juarez, Chihuahua state.
US President Donald Trump tempered his agreement to renegotiate NAFTA on April 27, 2017 with a warning that the trade agreement with Canada and Mexico would be terminated if there is no "fair deal." Trump campaigned for president on promises to scrap NAFTA, calling it "the worst trade deal maybe ever signed" and a "disaster" that has resulted in millions of US industrial jobs lost mostly to Mexico.
/ AFP PHOTO / Jesus AlcazarJESUS ALCAZAR/AFP/Getty Images