The ruling closes a loophole that made guns developed using 3D printers or assembled with homemade partners essentially untraceable.

So-called "ghost guns," do-it-yourself firearms made with a 3D printer or bought online as a kit and assembled, have become popular for their price, convenience, and, with increasing regularity ...

The US Supreme Court on March 26 upheld the federal regulation of built-at-home “ghost gun” kits, backing a rule put in place during the Biden administration to stem what officials said was a torrent of untraceable weapons.