> a lot of food is labeled as kosher, low fat, sugar free, contains peanuts, gluten-free, etc

His point is that all of these labels are voluntary. There is no need to enforce a law mandating these labels.

I believe that some food companies are trying to make non-gmo labeling illegal.

Do you think it should be illegal for a food supplier to add a 'non-gmo' label?

Of course not. That's silly. However, the supplier should only add that label if it actually is void of GMOs.