USMCA talks test U.S. push to tighten North American trade

Content rules are becoming the real battleground in North American trade, and autos sit at the center of it. U.S. Trade Representative Jamieson Greer is pushing talks in Mexico City toward tighter rules of origin and broader economic-security provisions, a shift that would force automakers and other manufacturers to source more parts regionally if they want to keep duty-free access under the agreement. For factories that rely on cross-border supply chains, that means more pressure to buy in the United States, Mexico or Canada; for suppliers that already meet the thresholds, it could mean more leverage and more business.

The stakes are embedded in the agreement itself. USMCA Article 34.7 requires the three countries to conduct a joint review six years after the pact took effect on July 1, 2020. The first scheduled review is due July 1, 2026. If the United States, Mexico and Canada all agree to renew it, the deal runs another 16 years, to 2042. If one or more parties refuse, annual reviews begin and the pact could still terminate in 2036.

Greer and Mexican officials have already agreed to a first official bilateral negotiating round for the week of May 25 in Mexico City, with Canada left out of that opening session. The agenda reaches well beyond procedure: economic security, complementary trade actions, strengthened rules of origin, critical minerals and unresolved bilateral trade irritants are all on the table. Seven major U.S. auto trade organizations have warned that breaking USMCA into separate bilateral tracks would undercut integrated supply chains and weaken U.S. competitiveness.

The setting for Greer’s comments underscored how far the debate has moved from classic tariff-cutting. He spoke at Micron Technology’s expansion in the Washington, D.C. suburbs, where the company said on May 22 that it was starting 1 DRAM manufacturing at its Manassas, Virginia, fab. Micron describes itself as the only U.S. manufacturer of memory chips, and the company said the expansion would significantly increase domestic memory production. That tied the trade review to semiconductors, reshoring and the idea that trade policy now serves industrial policy and national security as much as market access.

Autos remain the clearest test case. USMCA raised the regional value content requirement for passenger vehicles and light trucks to 75% from 62.5% under NAFTA, and added labor-value and steel-and-aluminum sourcing rules. Those changes were meant to push more production into North America, but even stronger rules could raise costs, add compliance burdens and complicate sourcing for automakers already juggling electronics, battery materials and metal inputs across borders.

For consumers, the risk is that tighter content rules eventually show up in higher vehicle prices or slower model rollouts. For workers, the promise is more investment and more domestic production if companies shift procurement and assembly back inside the region. The July 1, 2026 review is now being treated as a test of whether North America remains an integrated manufacturing zone or becomes a more guarded economic bloc built around security, leverage and local content.