U.S. Refuses the 16-Year USMCA Extension
North America Enters the Era of Annual Reviews

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On July 1, the United States, Mexico, and Canada held the joint review meeting of the USMCA (United States-Mexico-Canada Agreement). If the three countries had agreed at this six-year milestone since entry into force, the pact would have been extended for 16 years. Instead, U.S. Trade Representative Greer issued a statement that same day saying the United States would not agree to extend the agreement in its current form. The pact now shifts into a mode where the three parties must decide anew, every year, whether to extend it before it expires in 2036. The background to the review that began in July is covered in our earlier report.

What happened: the agreement does not disappear — but it gets questioned every year

This is easy to misread: the refusal to extend is not the expiration of the USMCA. Tariff preferences, rules of origin, investment protection, and dispute-settlement mechanisms all remain fully in effect. What changed is the guaranteed horizon of stability. A framework that was supposed to be locked in for 16 years has turned into a renewal question decided one year at a time.

The USTR statement goes on to say the United States will 'remain engaged' in addressing the agreement's shortcomings and the U.S. trade deficit. The natural reading is a declaration of intent to make negotiating pressure permanent.

Context: the premise behind nearshoring starts to wobble

The hardest-hit sector is manufacturing in northern Mexico. Production hubs for automobiles, electronics, and aerospace components have built up capital investment on the assumption of 'zero tariffs under the USMCA.' Considering that recouping the investment in a single plant takes five to ten years, having to price in the risk of 'what if it isn't extended next year' every single year makes investment decisions markedly heavier.

Against the backdrop of U.S.-China rivalry, northern Mexico has benefited as a landing zone for supply-chain realignment (nearshoring). If the stability of the agreement was the premise for that demand, this outcome risks pouring cold water on it. The Sheinbaum administration has confined itself to stressing 'continued dialogue,' deferring answers on what the U.S. side reportedly demands: raising the U.S.-content share of automotive inputs and measures to block transshipment of Chinese-made EVs.

The question: diplomacy and trade, now coupled year by year

For Canada, this is no distant fire either. Dairy, energy, and digital trade become annual negotiating variables. And the deeper Mexico and Canada go in their relations with China, the harder the conditions the United States may impose at the next annual review — a structure has emerged in which diplomacy and trade negotiations are coupled every single year.

My perspective

A state in which 'the agreement is alive, but no one knows from year to year when it might end' is uncertainty in the textbook economic sense. Even if tariff rates never change, corporate decisions on investment and hiring do. Because this kind of cost takes time to show up in statistics, we should be wary of premature verdicts that 'the extension refusal had no impact.'

Two indicators are worth watching: the three countries' pre-negotiation moves ahead of the next annual review (July 2027), and the quarterly trend in greenfield manufacturing investment within foreign direct investment (FDI) into Mexico. If the latter starts to slow, that is the signal that the cost of uncertainty has begun to transfer into the real economy.

Glossary

T-MEC = the Spanish-language name for the USMCA (Tratado México-Estados Unidos-Canadá). revisión conjunta = joint review. nearshoring = relocating production to countries near the consumer market.

The annual extension review is not the end of the agreement — it is the beginning of a state of 'maybe this is the end.'

※ This article is the author’s commentary based on public information. Please confirm the latest figures, dates and procedures with governments and primary sources. Quotations are kept minimal and sources are cited.