What do we call powers that are reserved to the states by the Constitution?

The powers that are reserved to the states by the Constitution are referred to as reserved powers. The Tenth Amendment to the U.S. Constitution specifically states that powers not delegated to the federal government nor prohibited to the states are reserved to the states or the people. This means that any power that is not explicitly assigned to the federal government falls within the purview of state authority, allowing states to govern themselves in areas such as education, transportation, and local law enforcement. This distinction is essential to understanding the balance of power in federalism, where both state and federal governments have distinct roles and responsibilities.