I had an interesting discussion with someone recently who didn't believe in the government running any programs other than the ones specifically mentioned in the Constitution (roads, postal service, military) because that would be socialism. I told him that being mentioned in the Constitution did not make them not socialism. It just made the Constitution a socialist document.

I pointed out that the reason the people who wrote the Constitution put those in there, is because they determined that it would be more efficient for the government to handle those programs rather than leaving it to the market to do it. Which means that our founding fathers understood that socialism (even though they didn't have the word "socialism" back then) is more efficient than the market under some circumstances. In the case of the services mentioned in the Constitution, they are services that are crucial to the wellbeing of the country and its citizens. Health care is another one of those services that is crucial to the wellbeing of the country and its citizens, and is less efficient when controlled by the market.