Politically the US is very much not a monolith on this topic and many states and localities have passed laws that were later struck down as unconstitutional. This is a bill in California, which does have about the strictest laws that the federation allows them to have, and they would place even stronger restrictions on guns if they could. This is not really ironic as much as it is pushing the envelope for gun control as far as they legally can.
But also, California regulators likely see the regulatory landscape as the reason this law is needed rather than in spite of it.
Gun manufacturers are likely against these types of regulations because many of them would affect manufacturers and the tools they use too.
> strictest laws that the federation allows them to have
Note that "the federation" allowed states to have stricter gun laws until recently when we got a new partisan supreme court that is out of step with the previous 200 years of jurispudence.
It was confirmed for the previous ~130 or so, at least, since United States v. Cruikshank... although I certainly wouldn't want to go back to those days before the Bill of Rights were incorporated against state/local governments... Basically it was a blank check for racists to suppress minorities.
The result of United States v. Cruikshank was that southern states were allowed to to prohibit black individuals from owning firearms to defend themselves from the KKK. Not exactly a great example of gun control.
What's also crazy it is that it is also relatively recently that the first amendment was incorporated against states and localities as well.
The gun manufacturer's trade association has consistently said that 3D-printed "ghost guns" are more fantasy than reality, and that legal designs don't cause any more trouble than other legal guns: https://www.nssf.org/articles/3d-printers-cannot-produce-und... .
But also, California regulators likely see the regulatory landscape as the reason this law is needed rather than in spite of it.
Gun manufacturers are likely against these types of regulations because many of them would affect manufacturers and the tools they use too.