(March 29, 2024, 1:29 PM EDT) -- WASHINGTON, D.C. — In a challenge by the U.S. government to a Fifth Circuit U.S. Court of Appeals’ affirmance of 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, the parties’ briefs were distributed March 27 for an April 12 conference in the U.S. Supreme Court....