Correct on both cases.
Sure. That's kinda the whole point of states having plenary police power. They get to decide what is and what isn't a crime in their jurisdiction. Now I think this would be a horrible idea on a policy level, but perfectly legal.
Once again the 14th Amendment comes into the picture since it incorporates the Bill of Rights into state law in all states. But here's the big difference. Local authorities, what ever form that might take e.g: town, city, county, etc., are not sovereign. They exist as a creation of state law and thus every exercise of power they make is an exercise of state power. As such they are bound by the same limitations as the state government, and conversely are required to do what the state tells them. That's why there are so many preemption laws. The several states on the other hand are independently sovereign and don't derive their authority from the federal government.
For the second one yes, and I explained why.
Nothing in the US Constitution requires states laws to be identical to federal ones, (for instance regarding narcotics), nor in assisting the federal government in enforcing law that they have enacted.
Sure, which you seem to have a misunderstanding of. The SUpremacy Clause doesn't mean that the states are forced to do what the federal government wants. It simply means that when state and federal law, including the constitution, conflict the federal law is the one that takes effect.
What lawlessness? Having different laws and priorities then you would prefer is not the same thing as lawlessness. In fact, regarding sanctuary policies, the largest reason they exist is to promote law and order. They want people to be able to go to local law enforcement to report crimes without being deterred from doing so by fear of being handed over to ICE.
Sure. And the states have laws around state participation and enforcement of those for their own reasons.
And states are allowed to execute their own judgment over what their own controlled substance laws look like as long as they aren't preventing the enforcement of federal law.
Everything the democrats support is strictly within the law, even if it doesn't match your own personal policy preferences. Also, is there a reason you didn't respond to my question about the states that have laws purporting to forbid the enforcement of certain firearm laws by anybody, including the federal government?
Considering the Republicans nominated a felon who was then elected, I'm not sure there is any connection between law and order and electoral success.
How, within the bounds of the Constitution, would it be corrected?