Tracker, I think I see your point. However if it were me traveling through those states, I follow the provisions of the law and keep them locked up in the trunk or in a acceptable locked case (not in plain view, or accessible).
Then I would exercise my rights when answering questions if pulled over, as I do already. If I recall correctly, not answering questions, or invoking your protected rights is not reason for them to suspect a crime, so no probable cause. Not being rude or disrespectful toward them, but understanding that I will not take the bait when they are fishing me.
That law was designed to protect travelers doing what previous posters were discussing. I seriously hope it has not been undermined by corrupted law enforcement agencies in those few states.
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