For the administration to claim, as Marty Lederman reports here, that IS nonetheless remains subject to the 2001 AUMF both because of this past and because IS though now independent in some fashion claims to be the “true inheritor” of “bin Laden’s legacy” (and because AQAP and other AQ associated forces have made ambiguous statements, for whatever reason, applauding IS’s claims and achievements) is just stunning from a legal perspective.