Yesterday, Vermon't governor signed into a law a bill that will require labels on genetically engineered or genetically modified (GMO) foods sold at retail stores Vermont. The law will also prohibit labeling products that contain GMOs as “natural.” The law will go into effect on July 1, 2016.
Maine and Connecticut have also passed laws requiring GMO labeling, but those laws do not go into effect until other states also pass such laws. Vermont is the first state to pass a "no strings" law requiring GMO labeling.
Federal law neither requires nor bars GMO labeling.
Details about the Vermont law and the effort to enact it are available at the website of the Vermont Right to Know GMOs Coalition.