The Congressional Budget Office has looked at the future of American health insurance, and it works.

Paul Krugman

A few weeks ago there was a furor when the budget office “scored” two incomplete Senate health reform proposals — that is, estimated their costs and likely impacts over the next 10 years. One proposal came in more expensive than expected; the other didn’t cover enough people. Health reform, it seemed, was in trouble.

But last week the budget office scored the full proposed legislation from the Senate committee on Health, Education, Labor and Pensions (HELP). And the news — which got far less play in the media than the downbeat earlier analysis — was very, very good. Yes, we can reform health care.

Let me start by...