
Mexico is moving to embed its GM corn ban in national food production standards, including a revised standard for corn dough for tortillas that bars GM white corn. The step makes the prohibition harder to reverse than a presidential decree as the dispute enters its final phase with the US.
A codified ban makes a lasting loss of Mexican demand for biotech US corn more likely, which is bearish for US corn export prices over the longer term.
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.