Proposition 37 and the definition of natural food

Let’s forget, for the moment, whether it’s a good idea to require foods that have been genetically engineered to show that on the labeling, as Proposition 37 on the November (US) ballot would do. There’s a curious provision in the initiative that’s causing more immediate concern. The wording has to do with when foods can be labeled “natural” and … it wouldn’t be utterly crazy to read the wording as saying that processed foods — whether they contain genetically engineered ingredients or not — could not be labeled as natural. One example opponents of the measure bring up is olive oil.