Finance
Trump administration backs Bayer's bid to curb Roundup lawsuits
Published by Global Banking and Finance Review
Posted on December 2, 2025
4 min readLast updated: January 20, 2026
Global Banking and Finance Review
Company
Published by Global Banking and Finance Review
Posted on December 2, 2025
4 min readLast updated: January 20, 2026
The Trump administration supports Bayer's Supreme Court appeal to limit Roundup lawsuits, arguing federal law preempts state claims.
By Diana Novak Jones
Dec 1 (Reuters) - President Donald Trump's administration urged the U.S. Supreme Court on Monday to take up Bayer’s bid to curtail thousands of lawsuits claiming its Roundup weedkiller causes cancer, backing the company’s argument that federal law bars the claims.
In a brief filed at the court, U.S. Solicitor General D. John Sauer bolstered Bayer’s effort to limit the lawsuits and potentially avert billions of dollars in damages, saying the company was correct that the federal law governing pesticides preempts lawsuits that make claims over the products under state law.
Bayer has asked the justices to hear its appeal of a lower court's decision to uphold a $1.25 million verdict awarded by a St. Louis jury in a Missouri state court case in which a plaintiff named John Durnell sued after being diagnosed with non-Hodgkin's lymphoma he attributed to his exposure to Roundup. Bayer is facing more than 67,000 such lawsuits in U.S. state and federal courts.
The German pharmaceutical and biotechnology company, which acquired Roundup as part of its $63 billion purchase of agrochemical company Monsanto in 2018, has said that decades of studies have shown Roundup and its active ingredient, glyphosate, are safe for human use.
LABEL FIGHT
Sauer told the justices that upholding the lower court's decision would allow juries to second-guess the science-based judgments of the U.S. Environmental Protection Agency.
"EPA has repeatedly determined that glyphosate is not likely to be carcinogenic in humans, and the agency has repeatedly approved Roundup labels that did not contain cancer warnings," Sauer said in the brief.
"Where, as here, EPA has specified the health warnings that should appear on a particular pesticide’s label, a manufacturer should not be left subject" to state labeling regimes each prescribing different requirements, Sauer said.
The brief comes as the Trump administration — which has aimed to address concerns from agricultural groups about potential restrictions on agrochemicals — must also contend with supporters of the “Make America Healthy Again” movement, who have highlighted possible health risks associated with pesticides.
Bayer's effort has drawn support from pro-business groups like the U.S. Chamber of Commerce, which said that allowing Bayer to face this liability opens up many corporations that follow federal law to litigation.
Lawyers for Durnell asked the Supreme Court to turn away Bayer's appeal. They said the plaintiff relied on Bayer's advertising and not just the label when he chose to use Roundup, and the company's marketing failed to warn consumers of the product's risks.
The U.S. Supreme Court asked the Trump administration in June for its views in the case.
MIXED RECORD
Roundup is among the most widely used weedkillers in the United States.
The company has paid about $10 billion to settle most of the Roundup lawsuits that were pending as of 2020, but failed to get a settlement covering future cases. New lawsuits have continued to pour in since then. Plaintiffs have said they developed non-Hodgkin's lymphoma and other forms of cancer due to using Roundup, either at home or on the job.
The company has had a mixed record at trial in the Roundup lawsuits. Bayer has prevailed in a series of Roundup trials, but it was also hit with large jury awards in the past few years, including a $2.1 billion verdict in a case in the U.S. state of Georgia in March.
Bayer settled the Georgia case and three others that had been on appeal in November.
Bayer has threatened to withdraw Roundup from the U.S. market as it fights the litigation. The company replaced glyphosate in U.S. consumer products with different weedkilling substances.
(Reporting by Diana Novak Jones; Additional reporting by Andrew Chung; Editing by Alexia Garamfalvi and Stephen Coates)
Roundup is a widely used herbicide produced by Bayer, primarily containing glyphosate, which is used to control weeds in agricultural and residential settings.
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