Supreme Court of the United States; or Has resulted in a decision that was based on an unreasonable determination of the facts in light of the evidence presented in the state court proceeding. It barred second or successive petitions generally but with several exceptions. Petitioners who had already filed a federal habeas petition were required first to secure authorization from the appropriate United States Court of Appeals, to ensure that such an exception was at least facially made out. Habeas corpus in the 21st Century The November 23, 2001 Presidential Military Order purported to give the President of the United States the power to detain non-citizens suspected of connection to terrorists or terrorism as enemy combatants. As such, that person could be held indefinitely, without charges being filed against him or her, without a court hearing, and without legal counsel. Many legal and constitutional scholars contended that these provisions were in direct opposition to habeas corpus, and the United States Bill of Rights and, indeed, in Hamdi v. Rumsfeld (2004) the U.S. Supreme Court re-confirmed the right of every American citizen to access habeas corpus even when declared to be an enemy combatant. The Court affirmed the basic principle that habeas corpus could not be revoked in the case of a citizen. In Hamdan v. Rumsfeld (2006) Salim Ahmed Hamdan petitioned for a writ of habeas corpus, challenging that the military commissions set up by the Bush administration to try detainees at Guantanamo Bay "violate both the UCMJ and the four Geneva Conventions." In a 5-3 ruling the Court rejected Congress's attempts to strip the court of jurisdiction over habeas corpus appeals by detainees at Guantánamo Bay. Congress had previously passed the Department of Defense Appropriations Act, 2006 which stated in Section 1005(e), "Procedures for Status Review of Detainees Outside the United States": On September 29, the U.S. House and Senate approved the Military Commissions Act of 2006, a bill which suspended habeas corpus for any alien determined to be an "unlawful enemy combatant engaged in hostilities or having supported hostilities against the United States" by a vote of 65-34. (This was the result on the bill to approve the military trials for detainees; an amendment to remove the suspension of habeas corpus failed 48-51.) President Bush signed the Military Commissions Act of 2006 (MCA) into law on October 17, 2006. With the MCA's passage, the law altered the language