New Delhi, June 26 -- WASHINGTON - For two decades, John Durnell kept weeds out of his Missouri garden with Roundup. By 2019, he had non-Hodgkin lymphoma. A jury gave him $1.25 million and found that Monsanto had never warned him the herbicide might cause it. On Thursday, the Supreme Court took it back.

In a 7-2 decision, the justices held that a 1947 federal pesticide statute bars failure-to-warn lawsuits like Durnell's in state courts. Writing for the majority, Justice Brett Kavanaugh said in the Court's opinion that the Federal Insecticide, Fungicide, and Rodenticide Act demands label uniformity, and that allowing state juries to require cancer warnings on Roundup would impose labeling standards "in addition to or different from" what...