In the Warner v. Godfrey case of 1901, the U.S Supreme Court was tasked with determining whether a state law that allowed for damages to be awarded in cases where telegraph messages were not delivered promptly and accurately violated federal laws governing interstate commerce. The plaintiff, Warner, had sent a telegram from Maine to New York via Western Union Telegraph Company but it arrived late causing him financial loss. He sued under Maine's law which held telegraph companies liable for errors or delays unless they could prove lack of negligence. The defendant, Godfrey (representing Western Union), argued that this state law interfered with interstate commerce and thus should be invalidated by federal jurisdiction as per the Commerce Clause of the Constitution. However, after deliberation on both sides' arguments and reviewing previous court decisions on similar matters such as Pensacola Telegraph Co v Western Union Tel Co., Justice Peckham writing for majority ruled in favor of Warner stating that while Congress has power over interstate commerce regulation including telegraphs; until it exercises this power explicitly states cannot be prevented from passing their own regulations even if they affect interstate businesses like telegraph companies.

In the dissenting opinion for Warner v. Godfrey, it was argued that the majority's decision to uphold a lower court ruling in favor of Mr. Godfrey was incorrect because it failed to consider important aspects of contract law and interpretation. The dissenting justices believed that the agreement between Mr. Warner and Mr. Godfrey should have been interpreted as a lease rather than an outright sale, which would have significantly altered the legal obligations of both parties involved in this case. They also disagreed with how damages were calculated by arguing they should be based on actual losses suffered by Mr. Warner instead of potential profits lost by Mr.Godfrey due to breach of contract.The dissenters felt that these errors resulted from misinterpretations or neglects made during trial proceedings, thus leading them to conclude that justice had not been served properly in this case.