The Biggest Obstacle to a System of National Health Care

The biggest obstacle to a system of national health care in the United States is that ______.

A) the experience of the other industrialized nations leads to the conclusion that a national health care system would be far more expensive in terms of GDP than the current system
B) the American public is very satisfied with the current system
C) patients' advocacy groups oppose it out of fear that they would lose their freedom to choose better care
D) such a policy runs counter to American political culture
E) a national health care system was tried during the Great Depression and was a total failure