The U.S. Assault on Mexico’s Food Sovereignty
On June 2, the U.S. government escalated its conflict with Mexico over that country’s restrictions on genetically modified corn, initiating the formal dispute-resolution process under the U.S.-Mexico-Canada Agreement (USMCA).
It is only the latest in a decades-long U.S. assault on Mexico’s food sovereignty using the blunt instrument of a trade agreement that has inundated Mexico with cheap corn, wheat, and other staples, undermining Mexico’s ability to produce its own food. With the government of Andrés Manuel López Obrador showing no signs of backing down, the conflict may well test the extent to which a major exporter can use a trade agreement to force a sovereign nation to abandon measures it deems necessary to protect public health and the environment.
The Science of Precaution
The measures in question are those contained in the Mexican president’s decree, announced in late 2020 and updated in February 2023, to ban the cultivation of genetically modified corn, phase out the use of the herbicide glyphosate by 2024, and prohibit the use of genetically modified corn in tortillas and corn flour.