M'Culloch v. Maryland: Securing a Nation
By Mark R. Killenbeck
Federalism—including its meanings and limits—remains one of the most contested principles in constitutional law. To fully understand its importance, we must turn to a landmark decision nearly two centuries old. M’Culloch v. Maryland (1819) is widely regarded as the Supreme Court’s most important and influential decision-one that essentially defined the nature and scope of federal authority and its relationship to the states.