A much-needed and hard-hitting plan, from one of the great Democratic minds of our time, to reform America's broken health-care system.

Undoubtedly, the biggest domestic policy issue in the coming years will be America's health-care system. Millions of Americans go without medical care because they can't afford it, and many others are mired in debt because they can't pay their medical bills. It's hard to think of another public policy problem that has lingered unaddressed for so long. Why have we failed to solve a problem that is such a high priority for so many...