I came across this article from the state of NY today. It not only pertains to 3D printers but also to any type of subtractive equipment, such as drill presses, lathes, and mills, both manual and CNC. By technical definition, a DRO unit would fall under this.
The problem I see with this is who will control the system and decide what you can and can't do. Now consider this: some of us have the skills, equipment, and knowledge to use common items like ballpoint pens, shoestrings, paper clips, and other things to make NFA items. So, from this logic, if I print, say, a ballpoint pen, how would that work out??
Anywho, here is the link, and at the bottom of the page is the link to the NY code so you can read it yourself. From some digging around, this is not the first year this has been proposed, either.