⁠Trump’s Commerce Secretary Opposes Auto and Steel Tariff Cuts as U.S.–Mexico Trade Talks Stall

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A potential breakthrough in U.S.–Mexico trade negotiations has encountered a major obstacle inside President Donald Trump’s administration. Commerce Secretary Howard Lutnick is reportedly resisting significant reductions in American tariffs on Mexican automobiles, steel and aluminum, complicating negotiations that had appeared close to producing an agreement.

The disagreement comes at a sensitive moment for North American manufacturing, where automakers, metal producers and suppliers depend on closely connected operations across international borders. Mexico is seeking relief from steep American import duties, while Washington wants additional trade concessions.

Despite the reported slowdown, Mexican officials maintain that negotiations are progressing, and the U.S. Commerce Department says communication continues. The uncertainty raises broader questions about manufacturing costs, business investment and the future of the United States–Mexico–Canada Agreement (USMCA).

How Lutnick’s Opposition Disrupted a Potential Agreement

The United States and Mexico had reportedly been approaching an arrangement that would exchange American tariff reductions for concessions from the Mexican government. According to the Wall Street Journal’s October 15 reporting, officials and business executives had become increasingly optimistic about reaching a preliminary agreement. However, Lutnick’s opposition to reducing duties on automobiles and metals complicated those expectations. The disagreement illustrates how negotiations involving several government departments can encounter obstacles even after substantial progress has been made.

Lutnick’s influence is particularly important because the Commerce Department administers major aspects of the tariffs imposed under Section 232 of the Trade Expansion Act of 1962. These measures are justified by the administration on national security grounds, giving them a different legal foundation from ordinary trade barriers. His objections therefore concern policies directly connected to his department’s responsibilities. Although the reported intervention has delayed progress, neither government has formally declared the negotiations terminated. The immediate problem is reaching a compromise that Washington’s policymakers can collectively support.

Why the 25% Auto and 50% Metal Tariffs Matter

At the centre of the disagreement are some of the most consequential tariffs affecting North American manufacturing. The Trump administration introduced a 25% additional tariff on covered imported automobiles in April 2025. It subsequently increased major steel and aluminum duties to 50%, and further changes implemented in April 2026 extended full-customs-value tariff treatment across specified metal products. Lutnick has reportedly resisted substantial reductions in these measures, including relief for certain finished products manufactured using steel and aluminum.

The headline rates do not describe every shipment’s exact tax burden. Qualifying automobiles assembled in Mexico or Canada can receive special treatment based on their documented U.S. content, while some metal derivatives face different rates or exclusions. Nevertheless, the duties create substantial additional costs for affected importers. Consider a shipment of steel products with a customs value of $100,000 that is subject to the full 50% tariff: the additional duty would reach $50,000. For businesses operating on tight margins, that expense can influence purchasing decisions, production costs and investment plans.

Automakers Face Complicated Rules for Cross-Border Production

North America’s automotive industry was built around a regional manufacturing system rather than three entirely separate national industries. Under the existing USMCA rules, qualifying passenger vehicles generally must contain at least 75% regional value content. However, Trump’s automotive tariffs introduced an additional distinction: whether portions of a vehicle’s value originate specifically in the United States. That distinction determines how much of the imported vehicle can potentially be exempted from the additional 25% duty.

For example, an eligible vehicle with a customs value of $40,000 and $12,000 in approved U.S. content could have the tariff applied to its remaining $28,000 in non-U.S. content. The calculation requires approval and supporting documentation, making compliance an important consideration for manufacturers. In August 2026, the Commerce Department revised submission procedures for these calculations, including new eligibility periods beginning December 1. For manufacturers already tracking thousands of individual components, additional content calculations increase administrative complexity. A simpler tariff agreement could therefore offer operational benefits alongside lower import costs.

Mexican Auto Exports Fall 12% as Manufacturers Face Growing Pressure

Mexico’s automotive industry is already experiencing significant challenges. Figures released by Mexico’s national statistics agency, INEGI, showed that the country produced 301,803 light vehicles and exported 277,369 in September 2026. Vehicle exports dropped approximately 12% compared with September 2025, while production declined about 15%. These declines coincided with continuing U.S. tariffs and uncertainty surrounding future trading arrangements. Domestic vehicle sales offered some relief, increasing approximately 8% over the same period.

The effects have been uneven across manufacturers. Reuters reported that General Motors, Ford and Nissan experienced notable export declines, while Kia, BMW and Mazda performed better. Mexico’s automotive industry association, AMIA, identified the country as the largest foreign supplier of light vehicles to the American market, accounting for approximately 16%. During the first nine months of 2026, Mexican vehicle exports to the United States fell around 5%, while shipments to Canada increased by more than 9%. These figures illustrate how important market access remains. Prolonged uncertainty could make manufacturers more cautious about expanding factories, purchasing equipment or maintaining existing production schedules.

Steel and Aluminum Tariffs Reach Beyond Metal Producers

The dispute over metals extends far beyond companies producing raw steel and aluminum. In April 2026, the Trump administration modified its Section 232 measures to apply tariffs to the full customs value of specified metal products, rather than calculating duties solely on their metal content. Major covered steel and aluminum products face 50% duties, while certain derivatives are subject to different rates, including 25%, with some exceptions. Consequently, manufacturers importing affected finished products can encounter significant tariff liabilities even when their businesses do not primarily produce metal.

Washington argues that these protections are necessary to strengthen domestic manufacturing capacity and reduce dependence on foreign suppliers. In its April 2026 proclamation, the administration reported that U.S. steel capacity utilization had risen to approximately 77.2%, compared with 72.3% in 2017. However, downstream manufacturers face a different calculation. Businesses producing machinery, automotive components and industrial equipment often depend on competitively priced materials and specialized parts. Higher import costs can therefore create tension between protecting domestic metal production and maintaining affordable inputs for other American industries.

Washington Wants Tougher Rules for North American Manufacturing

The tariff disagreement is connected to a wider American effort to change how vehicles qualify for preferential treatment under the USMCA. In May 2026, Reuters reported that U.S. negotiators had proposed raising the required North American content in qualifying vehicles from 75% to 82%. More controversially, the proposal would require 50% of vehicle value to originate specifically in the United States. Existing rules calculate regional content across the three participating countries rather than imposing a fixed American-content requirement of that size.

Mexico has resisted the proposal, concerned that it would weaken the regional approach underpinning the agreement and create a precedent for further country-specific requirements. American officials, meanwhile, have emphasized encouraging domestic manufacturing and reducing reliance on components sourced from outside North America, particularly Asia. The negotiations have also grown considerably more complicated. In September, Mexican Deputy Trade Minister Luis Rosendo Gutiérrez said the agenda had expanded from 54 issues to nearly 90, encompassing subjects such as digital-platform regulation. Reaching agreement on tariffs alone may therefore be insufficient to settle the broader dispute.

Mexico Maintains That Negotiations Are Making Progress

Despite the latest disagreements, Mexican officials have continued to describe the negotiations as productive. Deputy Trade Minister Gutiérrez told the Wall Street Journal that progress was being made, while the U.S. Commerce Department confirmed that communication remained ongoing. On October 13, Mexican President Claudia Sheinbaum provided additional context, explaining that negotiators had believed they were approaching an agreement before a September 16 conversation with Trump. According to Sheinbaum, the American president raised concerns about the growing U.S. trade deficit with Mexico, prompting further discussions rather than a completed deal.

The challenges extend beyond tariffs. A fourth formal negotiating round planned for September was postponed, although Mexican officials said technical discussions continued. Reuters also reported, citing the Financial Times, that Trump had pushed for additional partnerships between American and Mexican energy companies and increased Mexican purchases of U.S. natural gas. Mexico already depends on American supplies for approximately three-quarters of its natural gas requirements. These overlapping demands help explain why negotiations can make progress on individual issues without producing a comprehensive agreement. For manufacturers, continued communication is encouraging, but it cannot replace certainty about future trade costs.

The USMCA Remains in Force Despite Washington’s Refusal to Renew It

The stalled tariff talks are unfolding against a larger debate about the future of the USMCA, which entered into force on July 1, 2020. The agreement underwent its mandatory six-year joint review on July 1, 2026. During that meeting, the United States declined to extend the agreement for another 16-year term in its existing form. However, this decision did not immediately terminate the treaty. The USMCA remains legally in force under its current term, which extends until July 2036 unless the participating governments agree to an extension or other changes.

Under the agreement’s review mechanism, the three countries can reconsider its future annually until they agree to extend it or the existing term expires. On October 2, the Office of the United States Trade Representative announced public consultations ahead of the 2027 review, setting January 12, 2027, as the deadline for written submissions. The distinction matters for businesses: preferential trade rules remain available to qualifying goods, even as separate national-security tariffs affect certain imports. The continuing negotiations will determine whether governments can combine existing market access with more predictable tariff arrangements.

Canada Faces Its Own Risks From the U.S.–Mexico Trade Standoff

Although the current negotiations primarily involve Washington and Mexico City, Canada has a substantial interest in their outcome. Statistics Canada reported that 71.7% of Canadian merchandise exports went to the United States in 2025, down from 75.9% in 2024. Canadian manufacturers also depend on the regional automotive system that could be reshaped by Washington’s proposed country-specific content requirements. If the United States and Mexico settle those rules bilaterally before involving Canada, Canadian component suppliers could face pressure to adjust their production strategies.

The human consequences of existing tariffs are already visible in Canada’s steel industry. In September, Cleveland-Cliffs announced plans to idle finishing operations at Stelco’s Hamilton, Ontario, facility, affecting up to 500 employees. The company cited trade-related market difficulties and said it would concentrate steel production at Nanticoke, with affected Hamilton workers offered opportunities there. Ottawa has continued seeking relief for Canadian steel, aluminum and automotive producers while defending the trilateral agreement. A bilateral tariff arrangement with Mexico would not automatically resolve Canada’s disputes with Washington. Consequently, Canadian businesses have reason to watch both the terms of any Mexican deal and the precedent it establishes for future negotiations.

What Happens Next Could Shape North American Manufacturing

The economic stakes explain why businesses are watching the negotiations closely. According to the U.S. Census Bureau, merchandise trade between the United States and Mexico totalled approximately US$871.6 billion in 2025. Even comparatively small changes in tariff treatment can matter when trade operates at that scale. Research from the U.S. International Trade Commission has also demonstrated that automotive rules of origin create uneven consequences: its 2025 modeling estimated benefits for American parts and materials producers, alongside modest negative effects on domestic vehicle assembly and slightly higher average vehicle prices.

For negotiators, the next meaningful developments will involve concrete tariff concessions, changes to automotive-content calculations, and agreement on outstanding trade demands. Businesses will be looking for official commitments rather than optimistic assessments of diplomatic progress. A negotiated reduction in Section 232 duties could ease costs for affected manufacturers, while maintaining substantial tariffs would preserve the administration’s approach to protecting strategic industries. Both outcomes carry consequences for jobs, investment and consumer prices. For now, Lutnick’s reported objections have introduced another significant obstacle, leaving North America’s manufacturing sector operating under continued uncertainty.

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