Currently, only Connecticut and Maine have laws requiring labels for genetically modified food. But those requirements won't kick in until other US states adopt their own rules. Bills to do just that are expected in more than two dozen states.
Seventy percent of processed foods contain at least one ingredient made or derived from genetically modified crops, known as GMOs, according to the nonprofit Centre for Science in the Public Interest. The industry-backed Grocery Manufacturers Association puts the number between 70 and 80 percent.
"Clearly the FDA has the authority to require labelling, but the states are leading the way," Faber said. "Ultimately, once a number of states act, the federal government will too." Genetic modifications to a plant can improve its quality, hardiness or resistance to pests or disease. Scientific studies have found no evidence that GMOs are more harmful than foods without genetic modifications, but those pushing for label requirements point to the value in the information itself.
The proposals are opposed by biotechnology companies and many agricultural groups, who say genetic engineering has yielded more sustainable, affordable and productive farming around the globe.