Even as General Mills Inc and other companies vow to keep fighting mandatory labeling of genetically modified food ingredients, they have begun rolling out these disclosures across the United States to comply a new Vermont law. The moves come as U.S. lawmakers are unlikely to derail Vermont's law requiring labels on foods made with genetically modified organisms, or GMOs, before it takes effect on July 1. The law sets fines of $1,000 per day per product for noncompliance.