585 F.3d 187 (4th Cir. 2009) Cited 1,492 times
Holding that “when the defendant challenges the veracity of the facts underpinning subject matter jurisdiction, the trial court may go beyond the complaint, conduct evidentiary proceedings, and resolve the disputed jurisdictional facts,” and “when the jurisdictional facts are inextricably intertwined with those central to the merits, the court should resolve the relevant factual disputes only after appropriate discovery”