USMCA Review Negotiations: Progress and Challenges Ahead

The USMCA review negotiations between Mexico and the United States have moved from preparatory signaling into an active, rolling bargaining process centered on tariffs, autos, metals, and a widening economic-security agenda. The most consequential recent development is a dual-track outcome: negotiators have reported progress toward lowering U.S. tariffs on metals and autos, but both sides are also pushing some of the hardest sectoral disputes into the formal 2027 review stage. That combination reduces the odds of an immediate rupture while prolonging uncertainty for exporters and integrated North American supply chains. Mexico is now pairing conventional tariff diplomacy with a more explicit bargaining option, redirecting some imports toward the United States, to narrow the bilateral trade gap cited by Washington.

From Tariff Shock To A Narrower Exposure Base

Mexico’s opening posture became public on March 11, when President Claudia Sheinbaum said the government would seek lower tariffs on certain goods in the upcoming USMCA discussions. At that stage, the issue was framed primarily as a defensive effort to limit U.S. tariff pressure before the review process hardened into formal bargaining.

The first major change in the risk picture came in early June. On June 4, after consultations with U.S. authorities, Mexico clarified that about 85% of Mexican exports meeting USMCA rules of origin would be exempt from the new U.S. Section 301 tariff measure. That same estimate was reiterated on June 5 by Mexico’s Economy Ministry, which said roughly 85% of exports to the United States would likely remain exempt because they complied with USMCA origin rules. On June 14, the ministry refined the point again, saying around 85% of exports would remain exempt from a proposed additional 10% U.S. tariff linked to the Section 301 forced-labor probe.

Those June clarifications materially changed the near-term exposure profile. Instead of a blanket tariff shock, the risk narrowed to:

- non-compliant shipments outside USMCA rules of origin - firms with weak customs and certification capacity - sectors already vulnerable to U.S. sectoral tariffs, especially steel, aluminum, and autos

The scoring reflected that narrower exposure. Risk moved from 34 on June 4 to 32 on June 5, then back up to 38 by June 14 as officials quantified the exemption but left uncertainty around implementation, customs treatment, and the still-unresolved review agenda. Impact stayed elevated in the mid-40s, indicating that even a narrower tariff threat still mattered because it touched core export sectors and compliance systems.

A further stabilizing data point arrived on July 16, when U.S. Commerce Department figures reported by La Jornada showed that in May 2026, about 80% of Mexico-U.S. bilateral trade still entered tariff-free under USMCA. That did not resolve the dispute, but it confirmed that the treaty’s preferential architecture remained the backbone of cross-border trade even under rising political pressure.

Negotiations Move Into Active Review Mode

The process shifted from signaling to scheduled bargaining in mid-June. On June 12, Sheinbaum said Mexico was preparing the next round of USMCA review talks in Washington for June 15-18, with Economy Secretary Marcelo Ebrard leading discussions on U.S. tariffs affecting steel, aluminum, and automotive goods. On June 18, Mexico and the United States entered a key working day of the second round, with Ebrard scheduled for an extended meeting with U.S. Trade Representative Jamieson Greer.

By early July, the talks had acquired a more formal cadence. Reporting on July 2 pointed to a planned third round on July 20, while also highlighting supply-chain contingency needs in autos, agriculture, and regulatory compliance. On July 8, Mexico’s Economy Ministry told Congress that only 14 issues remained open in the review and confirmed a new Mexico-U.S. meeting for July 20 to define next steps. A parallel July 8 government update also signaled a policy push for more investment in strategic industries and greater certainty for firms exposed to tariffs and rules-of-origin changes.

On July 10, the Economy Ministry told the Senate it would carry 13 complaints against the United States into the next round. Those complaints reportedly covered:

- Section 232 tariffs on steel, aluminum, and autos - Section 122 measures - rapid-response labor cases - state-level trade barriers

The process then accelerated. On July 21, the U.S. Trade Representative announced that Mexican and U.S. delegations would meet in Mexico City from July 21 to 23 for the USMCA review and parallel talks on steel and aluminum tariffs, autos, economic security, labor, agriculture, and digital payments. On July 22, La Jornada reported that the third round had formally opened amid renewed tariff pressure from Washington, including a White House threat of a 10% penalty tied to alleged non-enforcement of anti-forced-labor laws. Sheinbaum said the formal working phase of the USMCA review had begun in Mexico on July 21, marking the transition from preparation to active review mode.

By July 23, the shape of the bilateral lane was clear. A third round was underway in Mexico City, and the U.S. side was explicitly centering:

- steel and aluminum - autos - labor - agriculture - electronic payments - economic security - closing “loopholes” for non-parties

Greer’s July 22 Senate Finance Committee appearance tied the review to broader U.S. tariff and trade-policy positioning. Mexican messaging, by contrast, emphasized stability and downplayed the risk of fresh tariffs during talks. That divergence mattered: Washington was using the review as leverage to shape regional production rules, while Mexico was trying to contain market anxiety and preserve negotiating room.

The Agenda Broadens And The Timeline Slips

The July round did not produce a breakthrough. On July 24, U.S. and Mexican officials said a fourth round would be held in September after the Mexico City talks failed to resolve major differences, especially on stricter automotive content rules. Reuters also reported that Greer was targeting interim arrangements by year-end with Mexico and Canada while deferring harder USMCA issues, such as autos, labor, and environment, to 2027.

That sequencing became a recurring feature of the negotiation. On August 5, Ebrard said the next formal Mexico-U.S. round had moved from August to September and warned that Washington was preparing additional tariff actions linked to alleged industrial overcapacity. On August 12, he sharpened the point further, calling the next U.S. tariff step tied to the overcapacity investigation Mexico’s most immediate external trade risk. These updates kept risk at 42 and impact in the 46-47 range, reflecting a negotiation that was active but still vulnerable to unilateral U.S. action.

The September calendar then became unstable. On September 15, El Universal reported that the fourth round was scheduled for the week of September 21, narrowing the immediate lobbying window for business groups seeking relief from Section 232 tariffs on automobiles, steel, aluminum, and components. On September 25, Mexico’s Economy Ministry said the fourth bilateral round had been postponed to October. But on September 29, the ministry confirmed that the fourth USMCA review round had been postponed and then reset for September 28-29 in Washington.

This sequence matters because it shows a negotiation that is not stalled, but repeatedly rescheduled as both sides test leverage. The risk score reflected that pattern: it eased to 34 on September 15 when a date was fixed, then moved back toward 38-42 as postponements and resets signaled unresolved conditionality.

Mexico’s Bargaining Strategy And The U.S. Security Frame

Mexico’s strategy evolved over the course of the review. Early on, the emphasis was on tariff reduction and preserving USMCA-compliant trade. By July, the government was also linking the review to domestic industrial policy, signaling support for investment in strategic sectors and regulatory certainty for exposed companies. That was particularly relevant for Mexico’s business and industrial-policy leadership, because each dated negotiation round affected capital expenditure, inventory, sourcing, and compliance planning in autos, metals, electronics, and pharmaceuticals.

A more explicit bargaining tool emerged on September 22, when Sheinbaum said Mexico was analyzing whether to redirect some imports from other countries toward the United States to help narrow the bilateral trade gap cited by President Donald Trump in the tariff dispute. This was a notable shift. Rather than offering immediate concessions across the full tariff agenda, Mexico signaled a narrower de-escalation channel tied to trade-balance optics. From a Mexican geopolitical perspective, that allowed the government to test whether limited trade concessions could reduce pressure from Washington without signaling broader vulnerability in the USMCA review.

The U.S. side, meanwhile, increasingly framed the talks through economic security. The July 21-23 agenda explicitly included that theme, and U.S. messaging linked tariffs, autos, labor, and loophole-closing for non-parties into a broader North American production strategy. For U.S. trade and supply-chain leadership, this made the review a live venue for shaping regional manufacturing rules while preserving competitiveness against extra-regional rivals.

The Canadian angle became more exposed as the bilateral U.S.-Mexico track deepened. Reporting on July 23 indicated that Washington was running separate tracks with Mexico and Canada, raising the risk that terms advanced with Mexico could later be used to pressure Ottawa on autos, metals, and supply-chain rules. For Canada:

- the business risk is precedent-setting concessions on auto content, reshoring, and Chinese-input limits - the geopolitical risk is reduced ability to shape outcomes early if Washington sequences sensitive issues bilaterally first - the trade and supply-chain risk is prolonged uncertainty for integrated North American manufacturing while interim deals advance on U.S. terms

In that sense, the U.S.-Mexico review is not just a bilateral tariff dispute. It is also a test case for how Washington may reorder North American trade governance under a security-inflected framework.

October Signals Progress But Not Closure

October brought the strongest signs yet of partial movement. On October 8, at a meeting between Sheinbaum and AmCham, business representatives said Mexico and the United States could reach partial understandings before year-end linked to the USMCA process. That suggested bilateral side arrangements might emerge before the full treaty review is settled.

On October 21, Sheinbaum said Mexico and the United States were close to an agreement in the USMCA review. The signal was politically important because it came directly from the president and implied movement on autos, rules of origin, and tariff questions. The risk score fell to 34, though impact remained elevated at 47, indicating that even if a settlement was nearing, the sectors involved were too important for the consequences to be minor.

A further sign of progress came on October 24, when La Jornada reported the Economy Ministry as saying there were advances toward reducing U.S. tariffs on metals and autos. Final terms were not published, but this was the clearest indication yet that negotiations had moved beyond procedural management into substantive tariff relief discussions.

Even so, the end-state remains incomplete. On October 29, at an event in Monterrey, Concamin president Alejandro Malagón said talks with the United States would continue into the following week and that both sides expected to define the issues for the 2027 USMCA review. He added that copper derivatives and heavy vehicles were being left for that later review stage. That is a critical signal: the current round may produce partial de-escalation, but some of the most sensitive sectoral pressure points are being deferred rather than resolved.

Bottom Line

The negotiations have shifted from broad tariff anxiety to a more structured bargaining process in which most USMCA-compliant trade remains protected, partial tariff relief is becoming plausible, and the hardest disputes are being pushed into 2027. The immediate watchpoints are the next negotiation round, any formal U.S. announcement on tariff adjustments, and whether Mexico operationalizes its import-reallocation idea as leverage. If October’s progress on metals and autos turns into published terms, near-term risk should continue to ease; if not, deferred sectors such as heavy vehicles and copper-linked manufacturing will remain exposed to renewed U.S. pressure.