Does Monsanto v. Durnell bar Maine from adding differing health warnings to pesticide labels? | Fact brief

Monsanto v. Durnell bars all subnational entities, including Maine, from adding health warnings to pesticide labels different from the federal government’s.

Missouri farmer John Durnell held he’d developed cancer after using Monsanto’s Roundup and sued the company for not disclosing the pesticide’s alleged cancer risk on product labels.

Missouri’s “strict liability” doctrine holds companies legally accountable for failing to warn about the dangerous nature of a product. On those grounds, Durnell was awarded $1.25 million dollars by a Missouri jury.

The decision was appealed to the U.S. Supreme Court, which ruled against Durnell, holding in a 7-2 vote that under federal law, states cannot impose labeling requirements “in addition to or different from” those required by the U.S. Environmental Protection Agency.

While the EPA and European Union agencies have stated Roundup is unlikely to be carcinogenic, the World Health Organization has deemed it “probably carcinogenic to humans.”