Personally I don't like the idea of the Federal government getting involved with CC laws. A national CC law could not be obtained years ago, so the local activists had to get it passed on the state level. Several who started the NFOA were a big part of getting CC passed in Nebraska for example. If it couldn't be passed years ago on a national level, why would it be any more successful today? Regardless, even if it did go through, why would we want there to be one law under Federal? All it would take is a liberal majority to take it all away.
Fly
You make a good case my friend, but what I would like to see is simply a federal law saying that states have to obey the law, as written in the 2nd Amendment, as well as the full faith and credit clause. This would be like a law in Nebraska saying that local governments can't infringe on the right beyond what the state does (which patriots in the state failed to get passed lately due to the efforts of traitors). A majority of traitors in government who would rewrite such a law would be just as likely to write a similarly illegal law whether or not one had been written by patriots earlier, just as illegal federal gun control laws have been written at the federal level already. As the saying goes, the devil is in the details. But Congress does have a lawful duty to stop states from disobeying the law. This is what the Constitution says about it:
“The Senators and Representatives before mentioned, and the Members of the several State Legislatures, and all executive and judicial Officers, both of the United States and of the several States, shall be bound by Oath or Affirmation, to support this Constitution...” Article VI, Clause 3, U. S. Constitution.
By my reading of that, all members of both the federal and state legislatures are in violation of the law by doing nothing while the Constitution is being trampled by criminal gangs that hold political power. It just doesn't seem like doing their lawful duty should be too much to expect from them.
This problem would have been solved a long time ago by a Supreme Court that was willing to do its duty in defending the law. But since that court has been politicized it looks like we have to find other means.