Since before he was elected, president Joe Biden has promised more gun control, and he is doing everything in his power to keep this one promise — up to and including executive action — specifically targeting 3D printing of guns. Or, as Biden refers to them, Ghost Guns.
The term “ghost gun” is meant to incite fear and is used by the anti-gun crowd as a slogan to sway the ignorant away from the fact that law-abiding citizens often customize their legal weapons with parts obtained online or manufactured in their homes. Some of the parts are drilled with machine tools or 3D printed and therefore do not have a serial number so it is harder for government to track the weapons. Biden will make this legal activity for law-abiding gun owners — illegal.
However, as the Fast and Furious scandal — which happened under Biden’s tenure as VP — shows us, serial numbers on guns don’t stop anyone from committing crimes. The US gave serialized weapons to cartels, who in turn used them on Americans.