Not sure I agree that that's what the Civil War decided, since it ended with the federal government asserting its power. I am not a constitutional law expert,

Not sure I agree that that's what the Civil War decided, since it ended with the federal government asserting its power. I am not a constitutional law expert, but the way the second amendment has been interpreted has become its meaning. At this point, I think what would have to happen is the 2nd amendment would need to be replaced with another amendment that better describes the limits on individuals rights to bear arms. Until then, these events will continue indefinitely. I simply do not believe that any SCOTUS would make a different decision.