From the Green Party:

"Currently, we are the only industrialized country without a national health care system. Unfortunately we have a private insurance system that insures only the healthiest people, systematically denying coverage to individuals with 'pre-existing' conditions and routinely terminating coverage to those who become ill."

(More: http://www.benefitslink.com/links/20000714...14-006198.shtml)

In your opinion, what's wrong with their position?