The food industry is digging deep to oppose California’s Proposition 37, which would mandate labeling of foods that contain ingredients derived from genetically modified organisms (GMOs). So far, the Grocery Manufacturers Association (GMA) has contributed $375,000 to the campaign opposing labeling of GMOs, while individual food companies, including many individual GMA members, have brought the total investment in the anti-Prop 37 campaign to about $2m. Some of the biggest food industry donors include PepsiCo ($35,495), Coca-Cola North America ($24,081), General Mills ($19,401), The Kellogg Company ($13,080), Del Monte ($14,400), ConAgra Foods ($56,598), and Nestle USA ($37,286), and there are also many much larger contributions from biotech firms.