Nullification

Nullification may refer to:

• Nullification (U.S. Constitution), a legal theory that a U.S. State has the right to nullify, or invalidate, any federal law that a state has deemed unconstitutional.
• Nullification Crisis, the 1832 confrontation between the United States government and the state of South Carolina over the latter's attempt to nullify a federal law.
• Jury nullification, a legal term that refers to a jury's ability to deliver a verdict knowingly in contradiction to written law.
• Nullification, a form of body modification involving the voluntary removal of body parts