In the case of American Trucking Associations, Inc. et al. v. United States et al., 1952, the U.S Supreme Court ruled in favor of federal regulation over interstate trucking rates and practices under the Interstate Commerce Act (ICA). The American Trucking Associations and other truck operators challenged an order by the Interstate Commerce Commission (ICC) that required them to file detailed cost information for their services with ICC as a basis for setting fair and reasonable rates. They argued this was beyond ICC's authority granted by ICA and violated their Fifth Amendment rights against self-incrimination. However, the court held that such regulatory oversight was within Congress’s power to regulate commerce among states; it did not violate any constitutional protections because businesses engaged in public service have an obligation to provide relevant information necessary for effective regulation.

In the dissenting opinion for American Trucking Associations, Inc. et al. v. United States et al., the justices argued that the Interstate Commerce Commission (ICC) had overstepped its authority by imposing restrictions on truckers' long-haul operations without sufficient evidence of public necessity or convenience. They contended that such a decision should be based on substantial proof rather than mere speculation or assumption about potential harm to short-haul carriers and railroads due to competition from long-haul truckers. The dissent also criticized the majority's interpretation of "public interest" in this context as too narrow and potentially harmful to consumers who could benefit from more competitive freight rates offered by unrestricted long-haul operations.