The Supreme Court handed pesticide manufacturers a decisive win, ruling 7-2 in Monsanto v. Durnell that the EPA, not state courts, holds authority over cancer-warning requirements on pesticide labels. The decision reversed a Missouri Court of Appeals ruling and jeopardized a jury award of more than $1 million to plaintiff John Durnell, who alleged that two decades of using Roundup caused his non-Hodgkin's lymphoma.
Justice Ketanji Brown Jackson issued a sharp dissent, joined by Justice Neil Gorsuch, calling the majority's interpretation "both remarkable and regrettable." The unusual left-right pairing drew attention. But the substance of the ruling deserves more scrutiny than Jackson's rhetoric, because what the majority actually did was reaffirm a basic principle: when Congress gives a federal agency the job of regulating product labels, state courts don't get to freelance a second, contradictory set of rules.
That principle matters. And Jackson's objection, while dressed in statutory textualism, would have opened the door to exactly the kind of regulatory chaos that federal preemption exists to prevent.
John Durnell sued Monsanto in Missouri state court. He claimed he used Roundup, a glyphosate-based herbicide, for roughly 20 years. He developed non-Hodgkin's lymphoma and argued Monsanto should have placed a cancer warning on the product's label. A Missouri jury agreed and awarded Durnell more than $1 million.
The Missouri Court of Appeals upheld the award. Monsanto appealed to the Supreme Court, arguing that the Federal Insecticide, Fungicide, and Rodenticide Act, FIFRA, gives the EPA sole authority over pesticide labeling. If the EPA has not required a cancer warning, the argument goes, a state court cannot punish a manufacturer for not including one.
Seven justices agreed. The majority held that EPA approval governs label adequacy under FIFRA, and state tort claims seeking to impose different or additional labeling requirements are preempted by federal law.
Jackson argued the majority "reads into FIFRA a labeling requirement that does not exist" and "reads out of FIFRA the statute's ongoing prohibition on misbranding." She framed Durnell's Missouri tort claim as running parallel to FIFRA's own misbranding provision, not conflicting with it. Under her reading, registration with the EPA cannot serve as a defense to a misbranding charge, and Missouri's tort duty should survive federal preemption.
"The majority reads into FIFRA a labeling requirement that does not exist, and it reads out of FIFRA the statute's ongoing prohibition on misbranding. This interpretation cannot be squared with the text of FIFRA or our precedents. Ultimately, the effect of the majority's interpretation is both remarkable and regrettable, for it unjustifiably closes the courthouse doors to state tort plaintiffs like Durnell."
The language is forceful. But the logic has a problem. If every state court in the country can independently decide that a federally approved pesticide label is inadequate, manufacturers face a patchwork of contradictory obligations, one jury in Missouri says the label needs a cancer warning, another jury in Ohio says it doesn't, and the EPA's own scientific assessment becomes irrelevant. That is not "parallel" enforcement. It is regulatory anarchy.
Jackson has developed a pattern of issuing fiery dissents that frame majority rulings as closing doors to sympathetic plaintiffs. Her escalating rhetoric has at times even isolated her from the Court's other liberal justices. The emotional appeal is consistent: the little guy loses access to the courthouse. But the structural question, who Congress assigned to make these scientific and regulatory judgments, gets buried under the sentiment.
The ruling carries significant consequences for Roundup litigation nationwide. Thousands of plaintiffs have filed claims alleging that glyphosate causes cancer. Under the Court's decision, state tort lawsuits are no longer the primary avenue for those claims. Plaintiffs seeking a cancer warning on Roundup now must petition the EPA directly to change its assessment of glyphosate.
That shift frustrates trial lawyers. It also reflects how FIFRA was designed to work. Congress created a centralized federal regime for pesticide regulation precisely because the alternative, 50 states, hundreds of juries, and countless contradictory verdicts dictating label content, would make coherent regulation impossible.
Durnell's situation is sympathetic. A man who used a product for 20 years and developed cancer deserves a fair hearing. But "fair" does not mean every forum gets to override the agency Congress put in charge. If the EPA's glyphosate assessment is wrong, the remedy is to challenge the EPA, not to let juries substitute their judgment for the agency's scientific review.
Justice Gorsuch joining Jackson's dissent raised eyebrows. The pairing is unusual, Gorsuch is one of the Court's most committed textualists, and his willingness to side with Jackson suggests he found the majority's reading of FIFRA's text genuinely strained. That is worth noting. Gorsuch does not join liberal dissents casually.
But a two-justice dissent is still a two-justice dissent. The 7-2 margin signals broad agreement across the Court's ideological spectrum that FIFRA preempts state tort claims seeking to alter federally approved labels. The Court has shown this term that it can reach wide consensus on statutory questions, and the lopsided vote here suggests the majority's reading of the statute was not a close call for most of the justices.
Jackson's dissent fits a recognizable template. She identifies a sympathetic plaintiff, accuses the majority of closing courthouse doors, and frames the ruling as an injustice that Congress never intended. The rhetorical formula recurs across her dissenting opinions.
What it consistently lacks is engagement with the structural costs of her preferred outcome. In this case, allowing state juries to override EPA labeling decisions would not just help John Durnell. It would create a system where every pesticide manufacturer in America faces unpredictable, state-by-state litigation over labels the federal government already approved. The compliance burden alone would be staggering.
Jackson has pushed to discard established legal frameworks before, and her approach often prioritizes outcome over institutional design. That instinct may play well in dissent. It would be dangerous as governing law.
The broader dynamic on the Court is worth watching. Other liberal justices have voiced their own frustrations with the Court's direction, but Jackson's tone tends to run hotter. Whether that sharpens her influence or diminishes it remains an open question as the Court works through a consequential term.
Several details remain unclear. The majority opinion's author has not been identified in available reporting. The exact date of the ruling is not specified. And the current status of Durnell's $1 million jury award, whether it has been formally vacated or remanded, is not yet confirmed.
Perhaps most important: the EPA's current official position on glyphosate's cancer risk is not detailed in the Court's ruling as reported. If plaintiffs must now petition the EPA rather than sue in state court, the agency's scientific assessment becomes the entire ballgame. The composition of the Court and the direction of federal agencies will shape how this ruling plays out for years.
Jackson called the decision "remarkable and regrettable." Seven of her colleagues called it the law. When Congress assigns a job to a federal agency, the courthouse is not supposed to be an end-run, no matter how sympathetic the plaintiff.