They haven't. If they had, we wouldn't be having this debate.
The USSC gets involved when there is a conflict between the lower Federal Circuit Courts. The USSC will look at the rulings of the Federal Circuit Courts in coming to their decision.
"the "militia" as defined in the 18th century was every able body not in the military."
According to the Militia Act of 1792, it was limited to able-bodied, white, male citizens, 18-45 years of age. Less than 20% of the U.S. population at the time.
You haven’t told me anything I don’t already know. It was simply a matter of attempting to understand your argument that perhaps the collective interpretation of the lower courts were correct?? That’s how I read your post. The conflicted rulings means only one side can be right, I don’t think there’s a middle ground between the two.