You are here: Constitutional Law & National Security > Section 3 > National Security Crimes
Padilla is a United States citizen. Acting pursuant to a material witness warrant issued by the United States District Court for the Southern District of New York, federal agents apprehended Padilla at Chicago's O'Hare International Airport on May 8, 2002. He was transported to New York, and on May 22 he moved to vacate the warrant. On June 9, while that motion was pending, the President issued an order to the Secretary of Defense designating Padilla an enemy combatant and ordering his military detention. The District Court, notified of this action by the Government's ex parte motion, vacated the material witness warrant.