Look at this graph.
Via Ezra Klein:
That orange line headed heaven-ward? That’s our deficit. All those other lines dipping down? That’s our deficit if we had the same health care spending per person as France, Germany, Canada, and the UK (all countries, incidentally, with higher life expectancies than our own). You might say, of course, that even radical reform would not bring us down to their health care spending. We could copy France’s system wholesale and still pay more for care. You would be right. But such reforms would bring us much closer than we are now.