The trade agreement that governs roughly $1.8 trillion in annual commerce between the US, Mexico, and Canada is approaching its first major stress test.

The USMCA, which replaced NAFTA when it took effect on July 1, 2020, faces a mandatory six-year joint review on July 1, 2026. Under Article 34.7 of the agreement, all three nations must decide whether to extend the deal for another 16 years, pushing it out to 2042. If they can’t agree, the pact enters a limbo of annual reviews that could ultimately lead to its expiration in 2036.

What’s actually at stake

Trilateral trade among the three nations totaled about $1.8 trillion in the year leading up to August 2025. Failure to renew doesn’t kill the agreement immediately, but it introduces the kind of uncertainty that makes long-term business planning nearly impossible.

Investment in Mexico has already declined by approximately 10% year-over-year, a sign that uncertainty is already biting before the formal review even begins. Job growth in both the US and Canada has been sluggish, and prolonged ambiguity around the agreement’s future could further dampen the nearshoring trend.

The politics have shifted

Discussions between the US and Mexico, initiated in March 2026, have focused on boosting regional production while limiting what negotiators call “non-market inputs” — diplomatic shorthand for reducing Chinese components flowing through Mexican factories into the US market.

The December 2025 stakeholder hearings drew over 1,500 comments. Rules of origin, labor enforcement, digital trade provisions, and strategies to curtail dependence on Chinese imports all featured prominently in the feedback.

What this means for investors

The immediate risk isn’t that USMCA collapses overnight. Even a failed renewal would keep the agreement in place through annual reviews until 2036. The real danger is the corrosive effect of uncertainty on investment decisions.

The 10% year-over-year decline in Mexican investment suggests this dynamic is already playing out. Nearshoring depends heavily on predictable trade frameworks, and without a clear USMCA extension, companies may delay or redirect investments to jurisdictions with more stable trade environments.

The July 2026 review date is now less than a year away, and the three governments are still in early-stage discussions. A smooth extension resets the clock to 2042 and provides a decade-plus runway of stability. Anything short of that introduces annual reviews stretching to 2036.