Kryeton, I just read that story, and came here to post it. You beat me to it!
Preemtion with teeth. We need a law like this in Washington State. As I read it, even LEOs would be subject to a $5000 fine for enforcing firearms laws that violate preemption.
Starting October 1st, any public official who passes or enforces gun regulations below the state level faces a $5,000 personal fine and could even be removed from office by the governor for enacting or enforcing local gun laws.