ANTI-INJUNCTION ACT
Anti-Injunction Act.A federal statute providing that a federal court may not enjoin state-court
proceedings unless an injunction is (1) expressly authorized by Congress, (2) necessary for the
federal court’s in rem jurisdiction, or (3) necessary to prevent relitigation of a judgment rendered
by the federal court. 28 USCA § 2283. See NORRIS–LA GUARDIA ACT. [Cases: Courts 508.
C.J.S. Courts §§ 216, 218–219.] [Blacks Law 8th]