Nullification, in United States constitutional history, is a legal theory that a state has the right to nullify, or invalidate, any federal law which that state has deemed unconstitutional with respect to the United States Constitution (as opposed to the state's own constitution).
The Doctrine of Nullification recommended that states living inside the Union have the one-sided, innate (characteristic, undocumented) option to void any law made by the central government that could be regarded illegal.
