The U.S. Supreme Court heard arguments Monday in a case that could determine whether Bayer, the maker of the weedkiller Roundup, can be held liable for failing to warn consumers about potential cancer risks linked to its active ingredient, glyphosate. The case, Monsanto Company v. Durnell, centers on whether federal law preempts state-level lawsuits alleging the company did not adequately warn users about the chemical's possible carcinogenic effects.
Protests and Political Divides
Hundreds of cancer survivors and advocates from the Make America Healthy Again (MAHA) movement protested outside the Supreme Court, arguing that the Trump administration's support for Bayer betrays public health concerns. MAHA, a coalition that advocates for chemical-free agriculture, has clashed with the administration over glyphosate, which is the most widely used herbicide in the U.S. The group's leaders, including Angela Huffman and Kelly Ryerson, have criticized President Trump for signing an executive order to boost domestic glyphosate production and for the Justice Department's backing of Bayer in the case.
Scientific and Legal Debate
The World Health Organization's International Agency for Research on Cancer (IARC) classified glyphosate as "probably carcinogenic" in 2015, sparking thousands of lawsuits. However, the Environmental Protection Agency (EPA) has repeatedly found that glyphosate is "unlikely" to be carcinogenic when used as directed. Bayer argues that federal law, specifically the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), gives the EPA sole authority to determine product warnings, not state courts. The company seeks to block lawsuits like the one brought by John Durnell, a Missouri man who was awarded $1.25 million after a jury found Monsanto failed to warn him of cancer risks.
Broader Implications
A ruling in favor of Bayer could limit consumers' ability to sue companies for failing to warn about product risks, according to legal experts. The case also highlights tensions within the Republican Party, as MAHA's support for Trump has waned over his administration's stance on glyphosate. The farm bill, currently moving through Congress, includes provisions that could further protect the chemical's use, deepening the divide between health advocates and agricultural interests.
Industry and Regulatory Stances
Bayer and the EPA maintain that glyphosate is safe when used properly, while plaintiffs' attorneys argue that new research warrants stronger warnings. The case has drawn attention from other pesticide manufacturers, including Syngenta, which faces similar lawsuits over its herbicide paraquat. The Supreme Court's decision, expected later this year, could reshape the legal landscape for product liability cases involving chemicals regulated by federal agencies.