By Robert Smith Princeton economics professor Uwe Reinharts strident New York Times editorial about the ultimate party responsible for out-of-control health care costs properly emphasizes the employers crucial role in the health care system. U.S companies, nonprofits and government entities pay for the majority of our health care costs. They have been the sloppiest purchasers of health care in the world, he writes, because they have passively paid for just about every health care bill put in front of them. Employer passivity has supported an opaque and chaotic pricing system, inappropriate incentives, rampant medical inflation, waste and lagging quality. Employers…