The Retail Industry Leaders Association, which encompasses more than 200 retailers, manufacturers and suppliers, added that Nafta's downfall would incur "massive" disruptions in agriculture and manufacturing as well as higher costs for US consumers.
"Right now, I'm giving it even odds", said one USA observer familiar with the talks, referring to the possibility of their collapse.
Mexico and Canada have repeatedly and publicly denounced US demands as the fourth round of talks concludes.
Under current rules, at least 62% of the parts have to come from North America to avoid border taxes.
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In order to begin the 12-hour suspension, the message told her to delete tweets that violated the company's rules. Teen Vogue has reached out to Twitter for further comment; this post will be updated with their response.
Government officials from Canada and Mexico slammed the Trump administration's proposals to renegotiate NAFTA in front of the top USA trade negotiator on Tuesday.
Those questioning the White House's approach to the trade talks, including business and agriculture groups, have said leaving NAFTA would cause serious damage to the USA economy because the three countries are now so integrated. "But let's just say we're in the normal process of a free trade negotiation".
In Mexico and Canada, as well as the USA, many are taking Trump's threat seriously. Since it was implemented, Mexico's unemployment has risen and the deal put about two million small-scale Mexican farmers out of business, forcing many of them to migrate to the United States looking for work.
The U.S. proposed raising that threshold to 85%, according to the Canadian government source.
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Over the past year, Mexico has aggressively pursued new or updated trade deals with other countries, seeking new markets for its exports and new partners for imports.
Mexican Economy Minister Ildefonso Guajardo Villarreal insists his country's economy be able to "adapt" if NAFTA is scrapped.
Mexican and Canadian officials are set to release a joint statement at 3 p.m. ET on Tuesday, following talks that ended Monday.
"The importance of NAFTA [to Mexico] is that it's been an anchor of stability", said Rubio, who is based at Mexico's Center for Research for Development, an independent think tank, and Washington's Wilson Center.
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