1) How do you know if the higher cost in the U.S. is due to the free-market aspect of it, as opposed to other factors like higher quality of treatment or a greater rate of chronic health problems? Just because it's cheaper in other countries doesn't mean improving our system is as simple as making it cheaper for everyone.
2) How is universal health care a supposed to be a human right when it hasn't existed for the vast majority of human history?
3) Don't you think there's an element of personal responsibility to be considered regarding this topic? Why should someone who takes care of him/herself, has a good job, and can manage their personal resources, have to pay for someone else who lives like a slob and has more children than they can support?