The U.S. Food and Drug Administration (FDA) seems like one of the most helpful parts of government. It supervises food and drug testing to make sure greedy companies don't sell us dangerous stuff. Reasonable people can debate whether the FDA actually assures product efficacy and safety. But the regulatory boot always presses toward delay, and this harms patients, argues John Stossel. Most never know they were harmed, because we never know what we might have had. But fewer medical options are the price of bureaucratic "caution."