In a gut punch to Second Amendment defenders, the Supreme Court today upheld a Biden administration rule clamping down on “ghost guns,” those untraceable firearms that patriots and hobbyists have long cherished as a symbol of American freedom. With a 7-2 decision, the court greenlit a radical overreach by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), mandating serial numbers, background checks, and age verification for gun kits bought online. Last year, a three-judge panel of the 5th U.S. Circuit Court of Appeals said a 2022 rule aimed at weapons that could be built from parts bought online without...