The Supreme Court ruled federal law preempts Roundup cancer warning lawsuits, sending Bayer AG shares up 20% in a landmark win for the Monsanto acquirer.

The court ruled against a man who sued Monsanto, alleging its weed killer Roundup caused his cancer.

The U.S. Supreme Court today ruled Bayer cannot be sued over state-level claims that the company failed to warn the public about cancer risks from its popular weedkiller…

The Supreme Court ruled Bayer cannot be sued over Roundup cancer warnings approved by the EPA, dealing a major setback to MAHA activists.