Power to Issue Writs: The Act of 1789
From the beginning of government under the Constitution of 1789, Congress has assumed, under the Necessary and Proper Clause, its power to establish inferior courts, its power to regulate the jurisdiction of federal courts, and its power to regulate the issuance of writs.
Section 13 of the Judiciary Act of 1789 authorized the Supreme Court "to issue writs of prohibitions to the district courts, when proceeding as courts of admiralty and maritime jurisdiction, and writs of mandamus, in cases warranted by the principles and usages of law, to any courts appointed, or persons holding office, under the authority of the United States."
Section 14 provided that all "courts of the United States shall have power to issue writs of scire, habeas corpus, and all other writs not specially provided for by statute, which may be necessary for the exercise of their respective jurisdiction, and agreeable to the principals and usages of law."
28 U.S.C. Section 1651-U.S. Code-Unannotated, Title 28 U.S.C. Judiciary and Judicial Procedure Section 1651. Writs
(a) The Supreme Court and all courts established by Act of Congress may issue all writs necessary or appropriate in aid of their respective jurisdictions and agreeable to the usages and principles of law.
(b) An alternative writ or rule nisi may be issued by a justice or judge of a court which has jurisdiction. (June 25, 1948, ch. 646, 62 Stat. 944: May 24, 1949, ch. 139 Section 90, 63 Stat. 102.)
The power of issuing the writ of habeas corpus belongs incidentially to every court of record; that it is part of their inherent rights and duties thus to watch over and protect the liberty of the individual.
All Writs Act injunction.
The All Writs Act, originally codified in the Judiciary Act of 1789, grants the courts equitable power to issue injunctions that ensure that litigants' substantive rights and not fustrated by interstices in applicable law.