I think you may be confusing which question you asked me. The Commerce clause, which you asked me about, was designed to prevent one state from setting up trade barriers against goods entering or passing through from another state. It has nothing to do with how a State uses those goods.
You asked Doctor Stochastic about the basis for rights. Since the Creator gave us free will each individual has the right to choose how long to continue his life and will be answerable to the Creator but not to some Government official.