The Imperial Charter or Constitutions of the New Order was the highest set of laws in the Galactic Empire. It represented the branch of Imperial legal statutes concerned with Constitutional law. The Galactic Constitution of the Galactic Republic presumably was the basis for the Imperial Charter, with several major changes including the nature of the executive branch, military and law enforcement, and Rights of Sentience as well as the laws passed by Palpatine as Supreme Chancellor. The Emergency Military Powers Act and Decree 77-92465-001 were apparently part of them. The Imperial Senate had the ability to pass amendments to them. Whatever constitution the Empire used was presumably overridden by the state of emergency declared in 0 BBY.