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An explainer covers why Mexico restricts transgenic corn, citing its status as a center of origin for corn breeds and health and environmental arguments under the USMCA. It also describes the corn decree and the phase-out of glyphosate.
The restriction on GM corn for food and planting keeps a structural limit on US corn sales to Mexico, supporting a discount for US corn relative to non-GM supply.
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.