“California officials have floated the idea of legislating lower prices. One way would be to throw West Los Angeles and Orange County into the same risk pools. That might reduce premiums in West L.A., but only by increasing premiums in Orange County. With a few simplifying assumptions, premiums in both West L.A. and the O.C. could rise by 19 percent. An alternative would be to cap premium increases. One state official proposes a cap of 8 percent. But that would just be an implicit form of government rationing. If insurers cannot charge premiums that cover their costs, they will cover fewer services.”