(February 9, 2024, 2:30 PM EST) -- WASHINGTON, D.C. — The U.S. government filed a petition for a writ of certiorari in the U.S. Supreme Court, arguing that the Fifth Circuit U.S. Court of Appeals erred in affirming a Texas federal court decision finding unlawful a rule promulgated by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) that broadened the definition of “firearm” to include parts of “ghost guns,” which can be assembled into weapons but, before the rule, were considered by some manufacturers to not require serial numbers or a firearms background check before sale....