EAT your vegetables. Avoid sweets and fats. Never smoke. And do your calis thenics. Or be ready to pay a hefty tax. Ridiculous? Sure. But under ObamaCare, Americans may well find themselves moving quickly toward a world of just those kind of mandates. Here's why. As taxpayers start paying an ever-larger share of the nation's health bill (as they clearly will under the Dems' health reforms), pressure will mount for Uncle Sam to see that folks live healthy lives. There'll be two key rationales for broader sin taxes and other ways to control lifestyles: * They promote "wellness." * They...