Reserved powers
Confirms that powers not given to the national government, and not forbidden to states, remain with states or the people.
In Simple, Modern English
If the Constitution does not delegate a power to the United States and does not prohibit states from using it, that power belongs to the states or the people.
Important Clauses & Details
Delegated federal powers
The national government must have a constitutional basis for its actions; that can include implied means of carrying out enumerated powers.
States or the people
Many matters, including much local government and ordinary public-safety regulation, primarily fall within state authority, subject to constitutional limits.
Why It Was Added
Ratification debates reflected concern that a stronger national government might absorb all political authority. This amendment confirms the Constitution's system of limited national powers and continued state authority.
Reserved powers cannot override the Constitution or valid federal law. The Tenth is not permission for states to ignore federal constitutional rights.
Plain-English study paraphrases summarize the text; they are not verbatim translations. Historical provisions and later changes are identified above. Sources: National Archives and Constitution Annotated.