Andrew Delaney v. HC2, Inc.

Whether a court of appeals may dismiss an appeal as moot without addressing a timely preserved challenge to the district court’s subject-matter jurisdiction when the challenged district-court orders remain operative and the requested appel­ late relief includes vacatur of those orders.

Whether, in determining diversity jurisdiction un­ der 28 U.S.C. § 1332, a federal court must address a prior federal appellate determination that the same United States citizen was domiciled abroad and therefore was neither a citizen of a State nor a citizen or subject of a foreign state.