Teams worked through the night "changing the text" and "got a lot of work done", Guajardo said.
At Trump's direction, the Commerce Department in May launched a probe into whether imports of cars, trucks and auto parts pose a national security risk, invoking the same 1962 trade law used to justify broad tariffs on steel and aluminum - including those imposed on Canada and Mexico.
United States and Mexican negotiators have made progress in narrowing differences on the update of the North American Free Trade Agreement, Mexico's Economy Minister Ildefonso Guajardo said Thursday.
At the close of the 3rd consecutive week of discussions in Washington, Guajardo said a deal was still possible by the end of the month. Their Tariffs and Trade Barriers are far too high.
Talks are due to continue Friday and include Jesus Seade, economics adviser to Mexico's President-Elect Andres Manuel Lopez Obrador. "Nobody will threaten us that our borders will be closed or militarised", Lopez Obrador, who takes office December 1, had said.
United States and Mexican officials will continue to work on bilateral issues before their Canadian counterparts rejoin the discussions on modernizing the 24-year-old trade deal, Guajardo said Friday.
"But we have to make sure that the US-Mexico bilaterals (are) done", he said.
Guajardo said negotiators were leaving some issues for last and that the sunset clause, which was "highly complex", had not yet been touched.