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On March 17, Mexico's President Claudia Sheinbaum signed a constitutional reform banning the cultivation of genetically modified corn. The move followed a December USMCA trade tribunal ruling in favor of a US complaint against Mexico's 2023 decree restricting GM corn in tortillas.
Mexico complied by rescinding three import-related parts of the decree, but kept the glyphosate phase-out, the GM corn import tracking protocol and the cultivation ban.
Mexico, the largest buyer of US corn, is keeping domestic GM corn planting restricted while easing import limits, which supports steady demand for US corn imports. The price effect is modest because the ban affects domestic production rather than trade volumes directly.
thenewlede.orgCarey Gillam2025年5月3日在过去 318 次看涨的政策事件之后，玉米 在 5 个交易日内中位数变动 -0.1%（48% 上涨；中间一半区间为 -1.4% 至 +1.5%），20 个交易日内为 -0.2%。
各商品基准价相对事件前最后收盘价的变动。历史数据汇总同类过往事件；仅描述已发生的情况，不代表未来走势。不构成投资建议。
