Lisa Poole, file, Associated Press
FILE - In this Dec. 15, 2007 file photo, a box of General Mills' Cheerios is seen on a shelf at a Shaw's Supermarket in Gloucester, Mass. General Mills says it will start labeling products across the country that contain genetically modified ingredients to comply with a law that is set to go into effect in Vermont. The maker of Cheerios cereal, Progresso soups and Yoplait yogurt notes it is impractical to label its products for just one state, so the disclosures required by Vermont starting in July 2016 will be on its products throughout the U.S.

MONTPELIER, Vt. — The announcement by General Mills that it will start labeling foods that contain genetically modified ingredients shows the industry might be giving up its fight against state efforts to require such labeling.

Still, many hold out hope Congress will come up with a national solution instead of a patchwork of state laws.

Vermont is the first state to require such labeling, effective July 1.

The U.S. Senate voted Friday 48-49 against a bill that would have blocked such state laws.

The Grocery Manufacturers' Association has challenged Vermont's law in federal court.

Campbell Soup Co. is in the process of printing new national labels, although it opposes state-by-state labeling laws. General Mills Inc. said Friday it will start nationwide labeling of products that contain genetically modified ingredients. It says it's not practical to label products for just one state.