I dont' see similar restrictions on Lathes. probably because lathes cost more (but not by much) and need some skill. unlike a 3d printer you can actually make a proper gun on one of those to much higher specs. The hypocracy is unsettling.

This is all at a time when the US desperately needs innovation. China basically owns us on raw manufacturing capability. 3d printers represent an excellent entry point for getting people into hobbyist manufacturing which will be where new ideas ultimately come from. This is just contributing to making is fall behind as a country.