A rule regulating the firearm kits was a centerpiece of President Joseph R. Biden Jr.’s gun control initiative. The Supreme Court has upheld the regulation, issued in 2022.

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.

A new U.S. Supreme Court ruling upholding restrictions against guns that can be made through assembly kits or 3D printers was cheered by New Jersey Democratic lawmakers who usually find themselves at odds with the majority conservative court.