Missouri passed a law requiring Roundup labels to include a warning of the risk of cancer.
The Supreme Court ruled that the labels required by the federal government’s Environmental Protection Agency are all that is needed.
The EPA labels do not require any mention about a risk of cancer.
The National Association of Wheat Growers welcomed the decision.
“This decision is a win for farmers and the broader agricultural community,” said Sam Kieffer, chief executive officer of the National Wheat Growers Association.