No wonder it confused me. It was cited by another FReeper as a landmark fed gov vs states rights case.
NOW, I am going to do my laundry!
It is a landmark fed gov v. states' right case, but the fact pattern it was regulating and the genesis and purpose(s) of the federal regulations are fairly far removed from regulating individual conduct and doctor liability at end-life, etc.
Not completely useless in the instant case, but tangential and difficult to apply to the facts of physicial assisted suicide and the degree of superiority of federal regulation of controlled substances.