
Mexico's president issued a decree on December 31, 2020, phasing out genetically modified corn for human consumption by January 2024 and banning glyphosate. The National Corn Growers Association chairman called it a serious threat to American agriculture and a relationship unlike anything seen before.
Mexico is a top export market for U.S. corn, so a phase-out of GM corn could reduce U.S. export demand and weigh on corn prices.
After 310 past bearish policy events, CORN moved a median +0.3% over 5 sessions (54% higher; middle half -1.4% to +1.9%), and +0.6% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.