This Supreme Court case involved the President, Directors, and Company of the Miners' Bank of Dubuque as plaintiffs in error against The State of Iowa on behalf of its District Prosecuting Attorney. At issue was whether a state could tax a bank chartered by Congress under an act passed by Congress. The court held that states do not have authority to impose taxes upon banks created pursuant to acts passed by Congress because such taxation would be unconstitutional interference with federal power over interstate commerce. Furthermore, it found that the taxing statute violated both due process and equal protection clauses since it did not provide for uniformity or equality among all taxpayers subject to taxation within the same class. Ultimately, this decision established precedent for protecting federally-chartered institutions from being taxed unfairly or unequally at the state level.

In the case of The President, Directors, and Company of the Miners' Bank of Dubuque v. The State of Iowa on the Relation of the District Prosecuting Attorney, Chief Justice Taney delivered a dissenting opinion in which he argued that an act passed by Congress to incorporate banks was unconstitutional because it exceeded Congress’s authority under Article I Section 8 Clause 18 (the Necessary and Proper Clause). He argued that this clause did not give Congress power to create corporations or grant them special privileges such as limited liability for shareholders. Furthermore, he stated that if such powers were granted then they would be unlimited since there is no way to determine what constitutes “necessary and proper” when creating a corporation. Therefore, Chief Justice Taney concluded that any attempt by Congress to pass legislation granting these types of corporate privileges was beyond its constitutional authority.