William J. Brennan, Jr., Federal Power Commission v. Southern California Edison Company…
“ In decisions over the past quarter century we have held that Congress, in enacting the Federal Power Act and the Natural Gas Act, apportioned regulatory power between state and federal governments according to a test which this Court had developed in a series of cases under the Commerce Clause. The Natural Gas Act grew out of the same judicial history as did the part of the Federal Power Act with which we are here concerned ”
