If you want to buy or sell foie gras in a Chicago restaurant, you'll have to break the law. Not that this stops anyone. Restaurants all over Chicago sell the French delicacy -- even restaurants that never sold it before. They openly thumb their noses at the new law. City officials say cracking down on foie gras pushers won't be a high priority. But the law is on the books, ready whenever the authorities want to harass some troublesome restaurateur. The ancient Chinese philosopher Lao Tzu said, "The more laws and order are made prominent, the more thieves and robbers...