The District of Columbia isn't a State - it falls under federal jurisdiction, even though the city now has its own government etc. The 2nd Amendment has never been incorporated into the 14th Amendment and applied to the States. I'm assuming the Court did not do that yesterday, as that issue wasn't before them. So I predict a loophole that people will try to argue with respect to State and local gun legislation - that the 2nd Amendment hasn't been held to apply to the States. Thoughts?