Research and buy only from suppliers that promise on the package or in other writing that their products are rBGH-free. Be especially careful with butter. If Dr. Frankenfood was in charge, he would create biological warfare crops that would destroy organic foods, destroy the competition. Just as the evil genius would have hoped, the USDA has allowed genetically altered foods into the conventional market which threaten organic farmers. Scientists of virtually every persuasion realize that Bt soy, corn and potatoes predictably will create Bt resistant insects.
Organic farmers use Bt as their main line of defense against insects.
Bt resistant insects could wipe out organic crops and organic farming. Destroying the competition just makes good business sense, reasons Dr. Frankenfood. With genetic engineering of the food supply, only a relatively small part of the total food supply can be known to be safe. You may consider taking advice from Frank Ford's book. If possible, stock enough for yourself, your family, and if possible your friends to live comfortably for two or three years.