Also known as: habeas corpus privilege · writ of habeas corpus
Written by attorneys · grounded in primary & secondary sources — see below
A constitutional guarantee protecting the writ of habeas corpus against suspension except in cases of rebellion or invasion when public safety requires it.
Phuong Pham, a foreign national held at a naval facility after a financial investigation, faces indefinite detention under a statute that replaces habeas review with a secret commission. The commission relies on redacted data and cannot order release. Phuong files a habeas petition in federal court. The court grants relief because the statute withdraws the privilege without a valid rebellion or invasion and supplies no adequate substitute process.
Perry Pratt refuses to answer questions before a state gambling inquiry and is jailed for contempt. He petitions for habeas corpus in federal court claiming the state proceeding violates his rights. The court reaches the merits of the privilege claim because the writ remains available to test the legality of custody even when state processes are involved.
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Peter Park, seized overseas and held as an enemy combatant at a U.S. facility, seeks habeas corpus to contest his indefinite detention. The government argues the privilege does not extend to him. The court grants review because the privilege protects access to a forum that can test the factual and legal basis for detention even for noncitizens under U.S. control.
Paige Porter, a U.S. citizen civilian, is convicted by court-martial while ordinary courts remain open. She petitions for habeas corpus to challenge the tribunal's jurisdiction. The court grants the writ because the privilege allows review of whether military authority lawfully extends to a civilian when civilian courts function.
Priscilla Parks cannot afford filing fees for a habeas petition challenging her state conviction. She requests waiver under in forma pauperis rules. The court permits the filing because the privilege of the writ remains accessible even when ordinary fees would otherwise bar review.
Pierre Poulin remains in custody after arrest without a judicial determination of probable cause. He files a habeas petition seeking release or a hearing. The court orders a prompt probable cause determination because the privilege of the writ protects against prolonged detention without neutral review of the government's justification.
Congress may suspend the privilege only in cases of rebellion or invasion when public safety requires it. The Suspension Clause forbids categorical withdrawal of the writ without either a formal suspension meeting those conditions or provision of a meaningful substitute process.
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A substitute must allow the detainee to challenge the legal and factual basis for detention, contest government findings, introduce exculpatory evidence discovered after the initial proceeding, and obtain release if detention is unlawful. Procedures that bar new evidence, deny counsel, or lack power to order release fail this standard.
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The privilege extends when the United States exercises complete control over the detention site. Courts evaluate practical reach of U.S. authority rather than formal citizenship or territorial labels alone.
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No. The privilege of habeas corpus permits review of military jurisdiction over civilians when ordinary courts function. A court-martial lacking constitutional authority produces a void conviction subject to habeas relief.
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…maintained in his dissent. Id. , at 59 et seq. Today we would ask with him: ". . . who could hold for a moment, when the writ of habeas corpus cannot be suspended by the legislature itself, either in the general government or most of the States, without an express constitutional permission, that all other writs and laws could be…