Hugo Black,
Interstate Commerce Commission v…
“ The foregoing provisions flatly forbid the Commission to approve barge rates or barge-rail rates which do not preserve intact the inherent advantages of cheaper water transportation, but discriminate against water carriers and the goods they transport. Concretely, the provisions mean in this case that Chicago-to-the east railroads cannot lawfully charge more for carrying ex-barge than for carrying exlake or ex-rail grains to and from the same localities, unless the eastern haul of the ex-barge grain costs the eastern railroads more to haul than does ex-rail or ex-lake grain. ”
