Glad we could work that out. So now what's Hillary's problem with giving a simple straightforward answer?
I guess I haven't seen any laws on the books requiring membership in a militant group to purchase or operate firearms that would serve as evidence that the collective right interpretation ever mattered.
Well maybe she doesn't agree, there is certainly ample legal support for differing opinions on the matter.
As for whether or not it mattered in the past, it appears to have been a basis for circuit court decisions in the past as to the constitutionality of various firearms restrictions. That sure sounds like it matters to me, or at least it presumably mattered to the litigants.