The U.S. -Mexico talks for weeks focused on crafting new rules for the automotive industry, which Trump has put at the centre of his drive to rework the 24-year-old deal he says has been a "disaster" for American workers.
Trump's relationship with Mexico has been strained over his push for it to pay for his border wall.
Canada has sat out the most recent phase of the year-long discussions, and once it rejoined the talks, the three sides would need to work for at least another week, Guajardo said. He says the deal has led to hundreds of thousands of lost American jobs, and he promised to either change it to be more favorable to the US, or withdraw. But now there is an Energy Chapter in the new NAFTA deal and it has become a point of contention. Mexico and the USA are close to finalising a preliminary agreement on a new NAFTA, which will let the third partner, Canada, sign on to the agreement.
Speaking to reporters Saturday, Mexico's incoming government's negotiator suggested the United States has even eased off on demands for a contentious "sunset" clause. The issue of rules of origin on autos has been central to the summertime U.S. -Mexico discussions, she added.
US and Mexican officials say they will push for a deal that could open the door for Canada to return. Trump emphasised the collaboration with the current and incoming Mexican administrations.
This agreement reached in 1994 was renegotiated more than a year ago under pressure of Trump, who called it "the worst trade deal in history" in his first presidential debate.
Seade also predicted that the nations will agree on a method to update Nafta without the threat of a so-called "sunset clause", an automatic expiration after five years - as the United States has sought since October.
"For some time now, he (Trump) has been very prudent in referring to Mexicans, or he hasn't said offensive things", Lopez Obrador said Friday.
Canadian officials have downplayed the significance of their exclusion from recent talks and argued that it is good for the US and Mexico to resolve their own differences on thorny issues like autos and agriculture.
Jesus Seade, the incoming Mexican government's chief NAFTA negotiator, said the issue had been "ironed out" at the NAFTA talks, without going into detail. "We're going to put a 25% tax on every vehicle that comes into the United States from the European Union", the president told supporters at a campaign rally in West Virginia on Tuesday, complaining that there were no Chevrolets to be seen on the streets in Berlin.
"It could be that we end everything between the USA and Mexico this week", told reporters Jesus Seade, delegate to the NAFTA negotiations of Mexican President-elect Andres Manuel Lopez Obrador, who also is in the talks.
He's spoken of better relations with America's neighbour following the rise of Mexican President-elect Andres Manuel Lopez Obrador (ahn-DRAYS' mahn-WEHL' LOH'-pez OH'-brah-dohr).
Lopez Obrador is due to take office on December 1.