Today, our firm file a supplemental amicus brief for the Fifth Circuit’s rehearing en banc of a challenge to the ATF’s bump stock rule. (We previously file an amicus brief in support of the petition for rehearing en banc.) Our brief argued that the bump stock rule was politically motivated and that bump stocks are not machineguns under the current statutory language. Finally, our brief demonstrated how the district court’s decision, which was affirmed by the 3-judge panel, was contradictory to its own findings of fact.