We're working on that in Michigan as well. We already have preemption laws, but the problem is that the word "brandishing" has never been defined, so local LEOs have occasionally equated open carry or even accidental exposure of a concealed firearm with brandishing - and a way to get around state preemption laws. As the police chief of Grandville, MI, said in an interview a few years ago, "As soon as the gun becomes visible, then we end up with the public being concerned, and technically we may have a violation of the law," Snyder said, "because the law doesn't allow people to display weapons where they are creating panic." Michigan law says nothing of the sort; it is an open carry without permit state, and has been since the state was founded. But because "brandishing" isn't defined, "the public being concerned" has been used as the standard in a couple of instances. I'm not aware that any of these charges have ever survived a legal challenge, but that doesn't stop some LEOs from trying.
"...I advise the gun. While this gives a moderate exercise to the body, it gives boldness, enterprize, and independance to the mind... Let your gun therefore be the constant companion of your walks," Thomas Jefferson