Bayer has secured a significant legal win at the U.S. Supreme Court regarding glyphosate, the active ingredient in its Roundup herbicide. The court ruled that federal regulations governing pesticide approvals supersede state-level legal claims. This decision impacts thousands of lawsuits alleging Roundup causes cancer, primarily by limiting states’ ability to impose stricter labeling or approval requirements than those set by the Environmental Protection Agency (EPA). The ruling establishes federal authority over pesticide registration, potentially shielding Bayer from further substantial state-level liabilities. While the ruling doesn’t negate all claims, it significantly narrows the legal avenues for plaintiffs. Bayer’s stock rose following the announcement, indicating investor confidence in the outcome. The case centered on whether state laws interfered with the EPA’s authority to approve pesticide labels.