The U.S. Supreme Court case Baltimore & Ohio Railroad Co. et al. v. United States et al., 1952, revolved around the issue of whether or not the Interstate Commerce Commission (ICC) had overstepped its authority in ordering reparations to be paid by railroads for past rate discrimination against certain shippers under Section 8 of the Interstate Commerce Act (ICA). The court held that while ICC has broad powers to determine and prescribe just and reasonable rates, it does not have power to award damages for past wrongs unless specifically authorized by Congress; such a power would essentially make it a court of law which was never intended by Congress when creating this administrative body. Therefore, any orders from ICC requiring payment of money as reparation must be enforced through courts where defendants can raise all relevant issues including those related with legality and reasonableness of original order.

In the dissenting opinion for Baltimore & Ohio Railroad Co. et al. v. United States et al., Justice Robert H. Jackson disagreed with the majority's interpretation of the Elkins Act, which prohibits giving or receiving rebates on freight charges under any circumstances. He argued that this case did not involve a rebate but rather a legitimate business practice where railroads charged less for transporting coal in larger quantities due to lower costs per unit involved in such transportation, and thus should not fall within the purview of the Act’s prohibition against discriminatory pricing practices intended to harm competition among shippers or between carriers themselves. Jackson also expressed concern about potential economic consequences of ruling against volume discounts, stating it could disrupt established commercial relationships and discourage efficiency-enhancing business practices without clear legislative intent from Congress supporting such an outcome. Finally, he criticized what he saw as judicial overreach by his colleagues who were effectively rewriting legislation through their broad interpretation of its provisions instead of deferring to lawmakers' original intentions when they passed it into law.