# United States-Mexico-Canada Agreement (usmca)—Sanitary and Phytosanitary Measures (SPS)—GMO corn | American Journal of International Law | Cambridge Core

> A American Journal of International Law case report covers a December 20, 2024 USMCA panel ruling that found Mexico's ban on genetically engineered corn for human consumption inconsistent with the agreement's sanitary and phytosanitary provisions. The report says the panel's reasoning on SPS measures breaks new ground.

- Date: 2025-09-05 · published 2025-09-05T12:00:00.000Z
- Category: policy · region Mexico · magnitude low
- Page: https://feedsoft.ai/events/22828-united-states-mexico-canada-agreement-usmca-sanitary-and-phytosanitary-measures
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

Upholding the US challenge weakens Mexico's ban on GM corn and supports continued US corn exports to Mexico, the largest buyer of US corn. Mexico is the top outlet for US corn, so the outcome matters for demand.

## Read by commodity

- CORN: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2022-07-15 | [Mexico’s glyphosate and GMO corn ban overturned by federal judge](https://feedsoft.ai/events/40467-mexico-s-glyphosate-and-gmo-corn-ban-overturned-by-federal-judge.md) | -10.7% | -8.4% |
| CORN | 2025-06-17 | [Mexico’s constitutional amendment bans plantings of GMO corn - The Organic & Non-GMO Report](https://feedsoft.ai/events/24178-mexico-s-constitutional-amendment-bans-plantings-of-gmo-corn-the-organic-and.md) | -2.5% | -4.3% |
| CORN | 2019-12-02 | [Viewpoint: How international anti-biotech activists manipulate year-old Mexican government to block crop GMO innovations](https://feedsoft.ai/events/55544-viewpoint-how-international-anti-biotech-activists-manipulate-year-old-mexican.md) | -0.2% | +1.7% |
| CORN | 2023-02-14 | [Secretary Naig Calls on EPA to Accelerate Biofuel Growth and Protect Congressional Intent in Final RFS Rule \| Iowa Department of Agriculture and Land Stewardship](https://feedsoft.ai/events/15331-secretary-naig-calls-on-epa-to-accelerate-biofuel-growth-and-protect.md) | -0.8% | -5.8% |
| CORN | 2026-07-21 | [Yakym: America First policy starts with Indiana agriculture, farmers  - Indiana Corn and Soy](https://feedsoft.ai/events/18310-yakym-america-first-policy-starts-with-indiana-agriculture-farmers-indiana-corn.md) | +0.0% | +0.9% |

## Sources

- cambridge.org: https://www.cambridge.org/core/journals/american-journal-of-international-law/article/united-statesmexicocanada-agreement-usmcasanitary-and-phytosanitary-measures-spsgmo-corn/F82AA6F5E6B4A9AD1ADF83A0401CC745

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.