1. The doctrine of sovereign immunity holds that you can't sue the government except to the extent the government has defined how and for what reason. In the case of the federal government, this is codified by the Federal Tort Claims Act.
http://en.wikipedia.org/wiki/Federal_tort_claims_act2. Most health insurance companies sell their products in multiple states, but those products must comply with the laws of each state. I was covered by Unicare in Illinois, but they have decided to discontinue operations here. They are still in business though! A list of states and who does business where is contained in this article:
http://en.wikipedia.org/wiki/Health_insurance_in_the_United_States(In the absence of Medicare for All single payer universal coverage, I advocate preemption of state regulation of health insurance in favor of full federal regulation. I also advocate federal licensing of doctors and other medical professionals in any event. One size fits all from sea to shining sea.)
3. Very few medical malpractice claims qualify to be heard in federal court. You need diversity of citizenship or a question of law at issue over which the United States Code has jurisdiction. The main reason liberals are reluctant to accept tort reform is their concern that injuries will not be adequately compensated and that meritorious cases will not be taken on the basis of contingency fees. However, if standardization of risks and costs is a desirable goal and universal care is the ultimate objective, liberals will need to compromise on the profitability of this practice area of the bar by subjecting such claims to arbitration.
4. This individual does not see the good in government regulation of any sort. It is a view of the world for which adherents cannot be persuaded otherwise. The alternative medicine framework is apparently where your opponent wants us to go, where the consumer is left to their own investigation and gullibility to distinguish between scientist and shaman.