386 U.S. 129 87 S.Ct. 932 17 L.Ed.2d 814 CASCADE NATURAL GAS CORPORATION, Appellant, v. EL PASO NATURAL GAS CO. et al. PEOPLE OF the STATE OF CALIFORNIA, Appellant, v. EL PASO NATURAL GAS CO. et al. SOUTHERN CALIFORNIA EDISON CO., Appellant, v. EL PASO NATURAL GAS CO. et al. Nos. 4, 5, 24. Argued […]