I know the Colorado AWB is a state law, but Tennessee is against local enforcement of a federal AWB.
A bill in the Tennessee State Legislature introduced by State Rep. James Van Huss to bar state or local officials from infringing on the right of the the citizens of this state to keep and bear arms by enforcing a federal gun ban failed in committee.
State Rep. Vance Dennis argued against the bill, pointing out it is already against state law for state or local officials to violate the law or state constitution in enforcing federal law so Van Huss' bill simply "codified what is already existing law" and "It does not do anything". That is, it does not do anything new, so a new law is not needed.
Federal agents would have to come into Tennessee to enforce a federal gun ban that violates state law and state constitutional protections, without local officials aiding and abetting.