§8381

need to satisfy any of its requirements. The opinion of the Court seems to forget that a defect with respect to one aspect of a regulation can invalidate the entire rule. See 33 Charles Alan Wright & Arthur R. Miller, Federal Practice and Procedure § 8381 (2d ed. 2022) (“Sometimes a court will determine that a portion of a complex agency action (generally a rule) is legally defective but that the remainder of the action is not. This situation raises the question of severance—i.e., whether the c