The Fugitive Slave Clause in the United States Constitution, also known as either the Slave Clause or the Fugitives From Labor Clause, is Article IV, Section 2, Clause 3, which requires a "Person held to Service or Labour" who flees to another state to be returned to his or her master in the state from which that person escaped. The enactment of the Thirteenth Amendment to the United States Constitution, which abolished slavery except as a punishment for a crime, has made the clause mostly irrelevant.