Of course Mr. Stossel is right.
One minor point. You cannot plant or eat corn (a.k.a. maize) without planting or eating genetically modified corn because corn exists nowhere in nature. It was developed by South American Indians. It is just the genetic modification was done by selective breeding. Selective breeding has been used by humans to genetically modify plants and animals for thousands of years. Almost everything you eat has been genetically modified. There are very few food plants or domesticated animals which are just the way they were originally retrieved from nature. Probably the most genetically modified critter around is your dog.