Louis Brandeis, Akron Railway Company v. United States…
“ Obviously, Congress intended that a method should be pursued by which the task, which it imposed upon the Commission, could be performed. The number of carriers which might be affected by an order of the Commission, if the power granted were to be exercised fully, might far exceed 600; the number of rates involved, many millions. The weak roads were many. The need to be met was urgent. To require specific evidence, and separate adjudication, in respect to each division of each rate of each carrier, would be tantamount to denying the possibility of granting relief. ”
