The news is not that we can do it. The news is they can't stop it. The DOJ had to acually pay the plaintiffs their $40,000 in legal fees. This changes everything in the gun debate. All regulations, on pretty much everything, are dependent on regulation of the manufacture and sale of goods under the commerce clause of the Constitution. When something can be made anywhere, and it's made for personal use, there is no possible way to tax and regulate the goods.
Example: I have smoked cigarettes my entire life. There is not a product on the market that is more taxed and regulated than tobacco. I was done paying these ridiculous prices for a small box of dried vegetation, paper, and a filter. Several years ago I started to make my own. When I started this, the price of a simple carton was about $65.00, and I would have to buy 3 of those every month. Because I make my own, I do not have to pay all the manufacture and sale tax. It costs me about $180.00 per year because I make them myself. That's less than when I was a kid when I was stupid enough to start in the first place.
Now that it is absolutely useless to attempt to track, stamp, label, log, and store all the data on the manufacture and sale of every gun... we now have to approach things the way we were always supposed to. We now have to accept guns as a normal piece of everyday technology, and teach every human being all the proper uses... and what never to do with them.