Whether this Non-Delegation Doctrine challenge to the constitutional authority of an agency was properly filed in district court, or whether an agency order extinguishes district court jurisdiction?

Whether non-party plaintiffs are precluded from raising constitutional challenges because the district court loses jurisdiction the minute a different plaintiff files a different case with the agency?

Whether §324 of the Fiscal Responsibility Act, enacted to bypass environmental cases in the Fourth Circuit, strips jurisdiction over this constitutional case, too, even though this Court has never allowed Congress to strip courts of jurisdiction to police its constitutional violations? If the inquiry does not end there, whether §324 is unconstitutional?

Whether this Non-Delegation Doctrine challenge to the constitutional authority of an agency was properly filed in district court, or whether an agency order extinguishes district court jurisdiction?