Terrorism — Antiterrorism and Effective Death Penalty Act 1996 — Designation as a foreign terrorist organization — Request for revocation of designation as foreign terrorist organization — 180-day deadline for deciding requests for revocation — National security and foreign policy concerns

Relationship of international law and municipal law — United States domestic law — Antiterrorism and Effective Death Penalty Act 1996 — Writ of mandamus — Mandamus an extraordinary remedy — Duty to act — Unreasonable delay — Principles for determining whether agency delay unreasonable — Judicial review — Duty to comply with Court remand mandate — The law of the United States