Louis Brandeis, Missouri Pacific Company v. Boone…
“ It is not lightly to be assumed that Congress would have resorted to means so extraordinary for securing workable tariffs.It is suggested that, although the primary purpose of the first clause of section 208 (a) was to facilitate the conduct of business, Congress intended thereby also to protect the carrier's revenues, and that a requirement of an affirmative exercise of state power after termination of federal control would, by presenting an obstacle to change make reductions of rates by the states difficult, and thus result in protecting the carrier's revenues. ”
