A fairly absurd argument that Dems' health care reform bill will increase liberty from William Galston:

So when the Tea Partiers complain that a government health insurance mandate invades their liberty, they reveal a defective understanding of the logic of liberty in a modern society. Individuals who choose to go without health insurance could try to resolve the contradiction by signing a document foreswearing all reliance on health care they didn't pay for themselves. But, because our medical norms don't permit us to leave injured accident victims at the side of the road, such a document couldn't be enforced. To be a citizen of the United States today is to live in a community where individual health care choices can have social consequences, a fact to which government can legitimately respond.

And such a policy is counterproductive anyway. Stephen Spruiell cites a Democrat who makes an relevant analogy to WalMart:

In most goods and services there are very few active consumers. What happens is, everybody selling a good is affected by Wal-Mart. You benefit from that wherever you are. So many of those who oppose consumer-driven health care use the perfect as the enemy of the good. You're not going to shop for health care if you're hit by a bus. That's not the point. The point is you're served in a health-care system that's been tightened up, both from a cost and quality point of view, by the fact that some consumers, for many procedures, are shopping around, and not just on price.