Supreme Court hears Monsanto v. Durnell on federal pre-emption of pesticide labeling claims
Updated
Updated · The Wall Street Journal · Apr 24
Supreme Court hears Monsanto v. Durnell on federal pre-emption of pesticide labeling claims
6 articles · Updated · The Wall Street Journal · Apr 24
The case centers on Missouri plaintiff John Durnell, awarded $1.25 million in damages against Monsanto, now owned by Bayer.
Monsanto argues federal law pre-empts state requirements for cancer warnings on glyphosate, citing EPA’s decades-long finding that glyphosate is not carcinogenic, while plaintiffs challenge this under recent Supreme Court precedent.
Tens of thousands of similar lawsuits have led to over $4 billion in damages, raising concerns about conflicting state and federal regulations and the broader impact on pesticide labeling and interstate commerce.
How will the Supreme Court's ruling impact thousands of unresolved Roundup cancer claims?
Could a landmark weed killer case dismantle federal agency authority over product safety?
How would a loss for Monsanto in court reshape the future of American agriculture?
Should states mandate cancer warnings on products federal regulators have approved as safe?
When scientific bodies disagree on cancer risk, which one should the law follow?
The High-Stakes Battle Over Glyphosate Warnings: Federal Preemption vs. State Laws in Monsanto’s Supreme Court Case
Overview
The Supreme Court will hear oral arguments on April 27, 2026, in Monsanto Company v. Durnell, a case centered on whether federal law under FIFRA preempts state lawsuits claiming Monsanto failed to warn about cancer risks from Roundup. John Durnell alleges Roundup caused his cancer, while Monsanto and the U.S. Solicitor General argue that EPA-approved labels block state claims. This dispute is fueled by a 2022 Ninth Circuit decision that vacated the EPA's cancer safety finding, prompting ongoing EPA review. The Court's ruling, expected by June 2026, will either dismiss thousands of lawsuits and reinforce federal authority or allow state claims to proceed, reshaping pesticide liability and regulatory power.