Hamir is a naturalized American citizen, having been born in Lebanon. He has been detained for over a week, but not charged with a crime, by agents of the Department of Homeland Security because they believe him to have fought against the United States. The agents used wiretapping and affixed a GPS unit to Hamir's car. He wants to contest what they are doing. Which cases will he use? The case where the Court held that due process requires that a U.S. citizen who is detained for allegedly fighting against the United States as an enemy combatant should be given a meaningful opportunity to contest the factual basis for his detention before a neutral decision maker is O a. United States v. Amir. O b. Hamdi v. Rumsfeld. Hamdan v. Rumsfeld. d. Abdullah v. Bush