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LatAm in Focus: Could a Clash over Corn Upend U.S.-Mexico Trade Ties?

By Carin Zissis

When it comes to challenges for U.S.-Mexico bilateral ties, the first tensions that spring to mind might be issues like fentanyl or immigration.

But what about corn? The North American staple crop has eclipsed seemingly more serious issues to become a recent stumbling block between these two countries.

The problem started in 2020, when the government of Mexico’s President Andrés Manuel López Obrador, or AMLO, said it would phase out imports of genetically modified corn and the herbicide glyphosate. That was no small matter for the United States—the world’s biggest corn producer and exporter—given that 90 percent of the corn it grows is GMO and Mexico is its second-biggest export market.

The United States has said that’s not good enough, as the new decree still leaves the door open to a ban down the road. On March 6, it requested formal trade consultations and, if no resolution is reached within 30 days, the two countries will get closer to a formal dispute. Potentially, Mexico could face U.S. tariffs.

“The real issue here is about regulatory predictability,” says Marroquín. “If Mexico is not clear in its commitment to a science-based, rules-based trade system—which is basically USMCA—there’s going to be plenty of uncertainty.”

 

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Trending Video

What Happens When Pigs Adapt to High Soybean Meal Diets? - Gustavo Lima

Video: What Happens When Pigs Adapt to High Soybean Meal Diets? - Gustavo Lima



In this special rerun episode of The Swine Nutrition Blackbelt Podcast, Gustavo Lima, PhD candidate in Animal Science at Iowa State University, discusses how grow-finish pigs respond to high soybean meal diets. He explains the initial drop in feed intake, changes in backfat, later adaptation, energy efficiency, amino acid utilization, and the rise in nitrogen excretion at higher inclusion levels. Listen now on all major platforms!

Click here to read the full research article: https://academic.oup.com/jas/article/...

“Once they got adapted to the diet, they can handle higher levels of inclusion of soybean meal.”

Meet the guest: Gustavo Lima / gustavo-lima-a9867127 is a PhD candidate in Animal Science at Iowa State University whose work focuses on swine nutrition, ingredient characterization, energy metabolism, caloric efficiency, and applied data analysis. With more than 15 years of experience in swine production across Latin America, Gustavo also brings expertise in environmental control, performance evaluation, barn ventilation, and grow-finish housing. Learn more from Gustavo Lima on The Swine Nutrition Blackbelt Podcast, available on all major platforms.