TALKS between the United States and Mexico over the future of the North American Free Trade Agreement (NAFTA) are dragging into this week, as auto industry officials said Friday that new sticking points had emerged over U.S. President Donald Trump’s threat to impose steep automotive tariffs.

Auto industry officials familiar with the talks said the Trump administration wants the ability to impose national security tariffs on future Mexican production from new auto assembly and parts plants.

These officials said U.S negotiators had essentially agreed that a new NAFTA trade deal would exempt existing Mexican auto plants from any “Section 232” tariffs that Trump may impose.

But the U.S. negotiators do not want to apply the same guarantees to new Mexican auto plants, the officials said, as the potential threat of 25-percent tariffs would discourage new automotive investment in Mexico to serve the U.S. market.

At Trump’s direction, the U.S. 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.

Administration officials and congressional aides have said the car tariff probe, like the metals tariffs, in part is aimed at winning concessions during ongoing NAFTA renegotiation talks.

Trump late Friday tweeted that a “deal with Mexico is coming along nicely. Autoworkers and farmers must be taken care of or there will be no deal,” adding that Mexican President-elect Andres Manuel Lopez Obrador “has been an absolute gentleman.”

Trump added that Canada “must wait” to rejoin the NAFTA talks. “Their Tariffs and Trade Barriers are far too high. Will tax cars if can’t make a deal!” Trump tweeted.

Adam Austen, a spokesman for Canadian Foreign Minister Chrystia Freeland, who is leading NAFTA trade talks for Canada, said the minister was in regular contact with her Mexican and U.S. counterparts.

“We’re glad Mexico and the United States continue to work out their bilateral issues. It’s the only way we’ll get to a deal,” Austen said.

Mexican Economy Minister Ildefonso Guajardo told reporters in Washington on Friday his talks with U.S. Trade Representative Robert Lighthizer would resume this week, but there were still many bilateral issues to work out before Canada could rejoin the talks.

Asked about progress on autos rules of origin, he said: “Nothing is close until everything is close, but there are items in every element that is being discussed.”

Guajardo said that once bilateral U.S.-Mexican issues were resolved, Canada could rejoin the talks to work on tri-lateral issues. He said this could take place in “the next few days or weeks.”(SD-Agencies)