The purpose of the BoR is to tell congress that they can't legislate xyz...etc. 2 amendment says they can't legislate against the right of the people to own and carry. They don't have the constitutional authority. The DoI says governments are instituted among men to secure these Rights. Rights don't come from congress or law, they come from God and you are born with them.
Also, they all swear to uphold and defend the USCons. So what does this say about our politicians? Traitors to the USCons.