# Mexico Bans GM Corn Cultivation in Constitutional Reform - Havana Times

> On March 17, Mexico's President Claudia Sheinbaum signed a constitutional reform banning genetically modified corn cultivation. The step followed a December USMCA trade tribunal ruling against Mexico's 2023 decree restricting GM corn in tortillas. Mexico rescinded three import-related provisions but kept the glyphosate phase-out, the import tracking protocol and the cultivation ban.

- Date: 2025-05-02 · published 2025-05-02T12:00:00.000Z
- Category: policy · region Mexico · magnitude low
- Page: https://feedsoft.ai/events/24635-mexico-bans-gm-corn-cultivation-in-constitutional-reform-havana-times
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md)

## Why it matters

The constitutional ban makes restrictions on domestic GM corn planting more durable, while import rules are loosened, which supports continued US corn export demand to Mexico. The price effect is modest.

## Read by commodity

- CORN: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| 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 | 2024-12-26 | [Mexico to reverse GE corn import curbs, codify domestic ban, Sheinbaum says  \| Agri-Pulse Communications, Inc.](https://feedsoft.ai/events/26962-mexico-to-reverse-ge-corn-import-curbs-codify-domestic-ban-sheinbaum-says-agri.md) | +1.9% | +6.8% |
| CORN | 2023-02-14 | [Mexico opens door for GM corn in animal feed, industrial use \| Reuters](https://feedsoft.ai/events/37293-mexico-opens-door-for-gm-corn-in-animal-feed-industrial-use-reuters.md) | -0.8% | -5.8% |
| CORN | 2024-04-16 | [Mexico pushes back GMO corn ban date to 2025](https://feedsoft.ai/events/30708-mexico-pushes-back-gmo-corn-ban-date-to-2025.md) | -0.3% | +3.3% |
| CORN | 2017-01-30 | [Monsanto sees prolonged delay on GMO corn permits in Mexico](https://feedsoft.ai/events/72975-monsanto-sees-prolonged-delay-on-gmo-corn-permits-in-mexico.md) | +2.0% | +1.2% |

## Sources

- havanatimes.org: https://havanatimes.org/opinion/mexico-bans-gm-corn-cultivation-in-constitutional-reform/

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