You don't know much about the state's police powers, do you? Read the Slaughterhouse Cases (83 US 36). It's probably the most comprehensive source.
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.