There are issues which I have given up on.
I simply do not expect anyone to know the natural law basis of the Constitution of the USA. [I could quote the ninth amendment but a famous supreme court justice has already called that amendment a blot of ink. What do you suppose he will say about the second amendment?]
But beyond that I doubt if there is any area of government in the USA in which the government does not think is their legitimate turf.
I can today even image judges and lawyers who have never read the Second Treatise on government or any of the philosophers that provide the basis for the USA Constitution.
So it does not surprise me that the USA government thinks it can take away people guns. It already feels it can take away everything else. One anonymous phone call to child services they already take away your children. They already are forced you to but a product you do not want --health insurance. The can force Ministers of the Bible to marry homosexuals which Bible call an abomination. It is hard to see much difference between the USA and any average totalitarian government at this point. The one think I think makes America different at this point is the American people--not the government.
As is known there was a debate if to include the Bill of Rights in the Constitution. What people do not know is that Madison felt that the inclusion of the Bill of Rights would give the impression that these were the only rights; i.e. he was more pro natural rights than even Jefferson, not less!