There is a voluntary solution -- follow the Underwriters' Labs model. The non-GMO (by whatever definition) suppliers should create or support an organization t

There is a voluntary solution -- follow the Underwriters' Labs model. The non-GMO (by whatever definition) suppliers should create or support an organization that provides a label for those suppliers that meet the non-GMO criteria. Consumers can choose to buy only food with that label. Misuse of the label will land an infringer in court. Simple, straightforward, and not subject to politics.