Gun safety groups are celebrating the Supreme Court decision upholding a Biden administration firearm regulation on nearly impossible-to-trace ghost guns.

WASHINGTON — The Supreme Court on Wednesday upheld a federal restriction on the sale of parts kits that permit unlicensed gun owners to make firearms at home that cannot be traced by the police. In a 7-2 decision, the justices agreed these homemade weapons, often referred to as “ghost guns,” qualify as firearms under federal law.