Guess I'm on a roll. What about the phrase 'A well regulated militia'? I don't get confusion. Arms of the militia were in the actual arms of the people, not in the corner armory.
Many people these days interpret that as the right for militia's to keep arms in the corner armory shall not be infringed.
About as disingenuous as claiming the issue is mental health after reversing the regulation to add people on govt assistance for mental health issues to the background database.