The entire nation owes radio broadcaster Rush Limbaugh a debt of gratitude, Libertarians say, because his ordeal has exposed every drug warrior in America as a rank hypocrite. "One thing we don't hear from American politicians very often is silence," said Joe Seehusen, Libertarian Party executive director. "By refusing to criticize Rush Limbaugh, every drug warrior has just been exposed as a shameless, despicable hypocrite. "And that's good news, because the next time they do speak up, there'll be no reason for anyone to listen." The revelation that Limbaugh had become addicted to painkillers -- drugs he is accused of...