2. Any prohibition or limitation in the states is done under the polpow.
3. At the state level, proof is required.
Read the Slaughterhouse Cases
Quote 'em in support of your inane assertions.
You can't, you won't.
The bottom line is this, Roscoe. You don't have enough social consciousness to keep your fears and prejudices from moving you to support governmental actions that destroy the range of non-tort personal choices available to the entire country of which you're a part.
Oh, yes, you'll say that it's social consciousness that makes you support them. But you have no evidence that to back up your concerns, so that means all you have to base your support on are fears and prejudices.
Lest you forget, the decades when this country grew the most and the fastest, and was the healthiest, was when there were no illegal drugs at all. The increase of drugs paralleled the increasing prohibition of them. We have not tried legalizing them to see the effect, and others who have legalized the more benign, such as cannabis, report no effect such that you're afraid of.
I can't see your problem. It looks like madness to me. But mumble on and happy trails. You're just one guy, or girl.