William O. Douglas,
Phillips Petroleum Company v. Wisconsin…
“ The fastening of rate regulation on this independent producer brings 'the production or gathering of natural gas' under effective federal control, in spite of the fact that Congress has made that phase of the natural gas business exempt from regulation. The effect is certain to be profound. The price at which the independent producer can sell his gas determines the price he is able or willing to pay for it (if he buys from other wells) . The sales price determines his profits. ”
