The Supreme Court has decided to hear an appeal from Bayer, the global agrochemical giant, regarding numerous state lawsuits claiming that its widely-used Roundup weedkiller poses cancer risks due to inadequate warnings. This legal battle touches on a significant issue: whether the approval of Roundup by the Environmental Protection Agency (EPA) without a cancer warning can negate these state-level claims.
Adding to the complexity, the Trump administration has supported Bayer's stance, reversing the Biden administration's position and creating a rift with some advocates of the Make America Healthy Again movement, who are opposed to granting the company the legal protection it seeks.
Research has linked glyphosate, the active ingredient in Roundup, to cancer, although the EPA maintains that it is unlikely to be carcinogenic to humans when used properly. Bayer has consistently denied these cancer-related allegations but has nevertheless set aside a staggering $16 billion to resolve ongoing lawsuits. In a strategic move, the company has also lobbied for state laws that would limit such legal actions; Georgia and North Dakota have already enacted legislation supporting this initiative.
The specific case under review by the Supreme Court originated in Missouri, where a jury awarded $1.25 million to a man who developed non-Hodgkin’s lymphoma after using Roundup at a community garden in St. Louis. This follows a previous case in California, where Bayer lost a similar lawsuit that resulted in a judgment exceeding $86 million in favor of a couple who claimed they were harmed by the weedkiller.
Bayer, headquartered in Germany and owner of Monsanto, the original manufacturer of Roundup since its acquisition in 2018, argues that intervention by the Supreme Court is necessary due to conflicting decisions from lower courts. For instance, in 2024, the 3rd U.S. Circuit Court of Appeals ruled favorably for Bayer.
Currently, Bayer faces around 181,000 claims related to Roundup, predominantly from private users. While the company has ceased using glyphosate in Roundup products for residential lawns and gardens in the U.S., it continues to incorporate the chemical in its agricultural offerings. Glyphosate is primarily utilized with genetically modified crops like corn, soybeans, and cotton, which are engineered to withstand its potent effects, thus enabling farmers to boost productivity while minimizing soil disturbance.
Bayer has warned that if the legal challenges persist, it may need to consider withdrawing glyphosate from the agricultural market in the United States, raising questions about the future of farming practices dependent on this chemical.
Bayer CEO Bill Anderson expressed, "It is time for the U.S. legal system to determine that companies should not face penalties under state laws when they adhere to federal labeling requirements."
Conversely, environmental advocates argue that Bayer is attempting to shield itself from jury decisions due to its unfavorable outcomes in state courts. Lori Ann Burd, the environmental health director at the Center for Biological Diversity, remarked, "It’s a sad day in America when our highest court considers depriving thousands of Roundup users suffering from cancer of their opportunity to seek justice in court."
As for the timeline, it remains uncertain whether the Supreme Court will hear the case in the spring or at the beginning of the next court term in October.
