Very few people in the U.S. fully oppose a positive right to health-care though. They're against a positive right to see a doctor and get regular treatment, but are in favor of a positive right to receive emergency-room care if necessary. Hence, ERs are required to treat heart-attack and stroke patients who show up on their doorstep, even if the victim is uninsured and has no ability to pay; turning them away is illegal.

So the question isn't over whether there's a positive right to health care--- almost everyone agrees there is to some extent. The disagreement is over which kinds of care are included in the right.