Whether a court of appeals may defer to FERC on the threshold question of FERC's authority to issue blanket certificates without determining the legality of the agency's asserted power, and whether the NGA permits FERC to issue perpetual, geographically unlimited blanket certificates that cannot be challenged after the statutory thirty-day rehearing deadline

are: 1. Whether a court of appeals may defer to FERC on the threshold question of FERC’s authority to issue blanket certificates without determining the legality of the agency’s asserted power ? 2. Whether the NGA , 15 U.S.C. § 717 et seq. , and the Constitution permit FERC to issue blanket certificates under 18 C.F.R. § 157.201 et seq. which never expire, are unlimited in geographic scope, and — according to FERC —may not be challenged after the statutory thirty -day rehearing deadline, irrespective of future condemnations that may occur decades or centuries after the date of the original grant ?