Institute for Agriculture and Trade Policy Archives

May 3, 2024

US says Mexico ‘abandoned science’ in GM corn limitations

By Johnathan Hettinger

The United States has doubled down on allegations that Mexico is violating international trade rules by working to ban imports of genetically modified (GM) corn for human consumption, arguing in a filing made public this week that Mexico has “abandoned science” in expressing concerns about how GM corn impacts human and environmental health.

Mexico is violating its obligations under the United States-Mexico-Canada Agreement (USMCA), making “factual and legal errors” in attempting to justify its decision to ban GM corn for use in tortillas and and dough and to gradually move away from the use of GM corn in animal feed, the US said in its formal rebuttal to Mexico’s case.

The 120-page US response, filed with a tribunal charged with arbitrating the trade dispute, said that Mexico has not shown that GM corn is likely to harm humans or native Mexican varieties of corn that are not genetically modified as Mexico has feared.

The US filing comes in response to a 189-page report issued by Mexico explaining the risks it sees posed by GM corn.

For years, Mexico has allowed the import of GM corn in the country, but the administration of Mexican President Andres Manuel Lopez Obrador has taken aggressive moves against the import of GM corn and against the use of glyphosate weed killer in the country, citing concerns threats to the health of the Mexican population as well as to the health of the environment. Glyphosate is commonly used by US farmers in growing a wide range of crops, and is sprayed directly over the tops of growing corn and other crops that have been genetically engineered to withstand the weed killer. In addition to being genetically altered to withstand herbicides, GM corn has also been engineered to manufacture its own toxin to repel insects.

“Mexico has legitimate concerns about the safety and innocuousness of genetically modified corn… and its indissoluble relationship with its technological package that includes glyphosate,” the government’s report states. There is “clear scientific evidence of the harmful effects of direct consumption of GM corn grain in corn flour, dough, tortilla and related products,” Mexico stated. More evidence is needed, Mexico says, to determine “whether and to what extent, such risks are transmitted to food products further downstream…”

April 15, 2024

“It’s getting worse” – US failing to stem tide of harmful farm pollutants

By Keith Schneider

VENICE, LA. Kindra Arnesen is a 46-year-old commercial fishing boat operator who has spent most of her life among the pelicans and bayous of southern Louisiana, near the juncture where the 2,350-mile-long Mississippi River ends at the Gulf of Mexico.

Clark Porter is a 62-year-old farmer who lives in north-central Iowa where he spends part of his day working as an environmental specialist for the state and the other part raising corn and soybeans on hundreds of acres that his family has owned for over a century.

Though they’ve never met, and live 1,100 miles apart, Arnesen and Porter share a troubling kinship – both of their communities are tied to a deepening water pollution crisis that is fouling the environment and putting public health in peril across multiple US states.

Arnesen’s home lies near an oxygen-depleted expanse of the northern Gulf known as the “dead zone,” where dying algae blooms triggered by contaminants flowing out of the Mississippi River choke off oxygen, suffocating shrimp and other marine life.

Porter’s farm is positioned at the center of the Upper Mississippi River Basin where streams and other surface waters saturated with farm wastes flood into the big river, and contaminated groundwater permeates drinking water wells. Cancer incidence in Iowa is among the nation’s highest, and is rising.

The culprit at the center of it all is a colossal tide of fertilizer and animal manure that runs off fields in Iowa and other farm states to find its way into the Mississippi River. The same agricultural pollution problems are plaguing other iconic US waterways, including Chesapeake Bay and Lake Erie.

US farmers use more fertilizer and spread more manure than in most other countries, accounting for roughly 10% of global fertilizer use, behind China and India. But while the nutrients contained in animal manure and fertilizer are known to nourish crop growth, the resulting nitrogen and phosphorous that end up in waterways are known to create severe health problems for people.

A grand government plan to address the problem has cost taxpayers billions of dollars with minimal results so far, and nowhere is the problem more pronounced than in the Mississippi River Basin.

The reasons for the persistent pollution problem are multi-fold, including strong industry opposition to regulations to control the farm contaminants, and a perverse system in which some government programs incentivize farming practices that add to the pollution even as other government programs try to induce farmers to reduce the pollution.

“You’re talking about systemic dysfunction,” said Matt Liebman, professor emeritus of agronomy and sustainable agriculture at Iowa State University.