The Tenth Amendment to the United States Constitution helps to define the governmental powers allocated to the federal government and the governmental powers allocated to the state governments—a concept known as federalism. The Tenth Amendment provides that “the powers not delegated to the United States by the Constitution, nor prohibited by it to the states, are reserved to the states respectively, or to the people.”
In Missouri, as in all states, the Tenth Amendment to the United States Constitution plays a crucial role in determining the division of powers between the federal government and the state government. This amendment, which is part of the Bill of Rights, establishes the principle of federalism by asserting that any powers not specifically granted to the federal government by the Constitution, nor prohibited to the states, are reserved for the states or the people. This means that Missouri has the authority to legislate and govern in a wide range of areas that the Constitution does not explicitly assign to the federal government. Examples of state powers include regulating intrastate commerce, running elections, establishing local governments, and other matters of local concern. However, federal law can still preempt state law under the Supremacy Clause when there is a conflict, and the scope of state powers can be affected by interpretations of the Constitution by the courts.