Mexico's USMCA Trade Exempt From New US Forced Labor Tariffs

The US Trade Representative proposed a 10% additional tariff on Mexican imports on June 2, 2026, under a Section 301 forced labor investigation covering 60 economies, though Mexico's Ministry of Economy confirmed that USMCA-compliant goods, representing roughly 85% of Mexico's export volume to the United States,  are exempt. Sectors already subject to Section 232 tariffs, including automobiles, steel, and aluminum, are also excluded, though they continue to face duties of up to 50%. Formal negotiations over the remaining 15% of exposed trade will take place over a 45-day consultation window, with Economy Minister Marcelo Ebrard leading the Mexican delegation amid the broader USMCA joint review process.

Mexico's Ministry of Economy confirmed that approximately 85% of the country's exports to the United States would be exempt from a proposed 10% tariff stemming from a US Trade Representative investigation under Section 301 of US trade law, which targets 60 economies over alleged failures to prevent imports of goods produced with forced labor in third countries.

The USTR announced the investigation on June 2, 2026, concluding that the 60 economies had not effectively enforced measures to block forced-labor goods. As a result, it proposed a 10% additional tariff on imports from Mexico and 13 other economies, including the European Union, Canada, Argentina, and the United Kingdom. A separate tier covering 46 other economies, among them China, Brazil, India, South Korea, and Japan, faces a proposed 12.5% additional tariff. The proposal does not take effect immediately, as the USTR opened a 45-day public consultation and negotiation period before a final determination.

Following consultations with USTR on June 3, the Ministry of Economy clarified that goods complying with USMCA rules of origin, roughly 85% of Mexico's export volume to the United States, are exempt from the measure. Goods already covered under Section 232 orders, including automobiles, steel, and aluminum, are also excluded from the new proposal.

"In consultations conducted, it was clarified that Mexico's trade that complies with the rules of origin of the USMCA, around 85% of the volume of our exports, is exempt from the measure. Nor would it affect those goods considered in the 232 orders," the Ministry of Economy stated.

The Remaining 15% and What Comes Next

For the portion of Mexican exports not covered by USMCA rules of origin, the Ministry of Economy said it would hold formal talks with the USTR over the coming 45 days. Those discussions will include a formal round under the USMCA joint review process led on the Mexican side by Ebrard, where Mexico will present documentation on its commitments and actions against forced labor.

Mexico said it is confident the tariff proposal affecting the remaining 15% of its trade will be modified based on the outcomes of those bilateral discussions.

A Tool to Rebuild Tariff Capacity

Trade analysts framed the investigation as part of a broader US strategy to reconstitute its legal basis for imposing tariffs after prior measures faced legal setbacks. Adrián González, President, Global Alliance Solutions, said the forced-labor inquiry had been widely anticipated by market participants.

"We already knew that new tools were coming to impose tariffs. The levels of 10 and 12.5% are very similar to those that had been used previously, so to a large extent the same parameters are being replicated under a new legal basis," González said.

He added that the USMCA exemption mirrors exceptions already embedded in prior tariff measures, making the ongoing treaty review more consequential than before. "The USMCA issue is more important than ever because now we have to discuss not only the treaty, but also the parallel tariffs under Sections 301 and 232," González said.

The Ministry of Economy confirmed the Section 301 investigation is part of a US government strategy to replace tariffs previously imposed under the International Emergency Economic Powers Act, which were struck down by the Supreme Court after reaching 25%, and under Section 122, which is set to expire on July 24, 2026.

Sectors Already Under Tariff Pressure

Christian de la Huerta Ávila, Senior Economist, Casa de Bolsa Finamex, cautioned that the exclusion of Section 232 goods from the new proposal should not be read as relief for those industries.

"The Section 232 exemption is not a relief. Those goods are outside this investigation because they are already subject to tariffs of 50% on steel and aluminum, and 25% on vehicles and heavy trucks, among other sectors," de la Huerta Ávila said.

He noted that this is the third Section 301 investigation in fewer than three months to directly reference Mexico, a legal instrument historically associated with US-China trade disputes rather than North American trade relations.

Broader Trade Stakes

The development adds complexity to US-Mexico trade relations at a moment when both countries are preparing for the formal USMCA joint review. With parallel tariff tracks under Sections 301 and 232 operating alongside the treaty framework, analysts say the review will need to address a wider set of commercial disputes than originally anticipated.

Mexico's export base remains significantly tied to USMCA-compliant manufacturing, which insulates the bulk of its trade from the current proposal. The outcome of the 45-day consultation window will determine whether the remaining exposure narrows or becomes a more durable feature of the bilateral trade landscape.