The 3d Circuit recently dismissed the government's interlocutory appeal and Petition for Writ of Prohibition or Mandamus it filed in response to the district court's order granting use immunity to a defendant's possible co-conspirator. The court reasoned that the appeal was interlocutory and did not fit within the collateral-order doctrine. And the court refused to issue one of the Extraordinary Writs because an immunity order does not warrant a writ under the All Writs Act.