John Fritze, Sarah Owermohle, CNN Thu, June 25, 2026 at 6:00 p.m. UTC 5 min read Add Yahoo as a preferred source to see more of our stories on Google. This 2019 photo shows containers of Roundup on a store shelf in San Francisco. - Haven Daley/AP The Supreme Court on Thursday sided against a Missouri man who claimed that the herbicide Roundup caused his cancer.