Rumsfeld v. Hamdi ( 2003 )


Menu:
  •                           PUBLISHED
    UNITED STATES COURT OF APPEALS
    FOR THE FOURTH CIRCUIT
    YASER ESAM HAMDI; ESAM FOUAD           
    HAMDI, as next friend of Yaser
    Esam Hamdi,
    Petitioners-Appellees,
    v.
    DONALD RUMSFELD; W. R. PAULETTE,
    Commander,
    Respondents-Appellants.
    CENTER FOR CONSTITUTIONAL RIGHTS;
    RICHARD L. ABEL, Connell Professor
    of Law, University of California at
    Los Angeles; WILLIAM J. ACEVES,
    Professor of Law, California
    
    Western School of Law; BRUCE A.
    ACKERMAN, Sterling Professor of            No. 02-7338
    Law & Political Science, Yale
    University; LEE A. ALBERT,
    Professor of Law, University at
    Buffalo Law School, The State
    University of New York; BARBARA
    BADER ALDAVE, Loran L. Stewart
    Professor of Corporate Law,
    University of Oregon School of
    Law; ALICIA ALVAREZ, Clinical
    Associate Professor of Law, DePaul
    University School of Law; DIANE
    MARIE AMANN, Professor of Law,
    University of California, Davis,
    School of Law; MICHELLE J.
    ANDERSON, Associate Professor of
    
    2                        HAMDI v. RUMSFELD
    Law, Villanova University School        
    of Law; FRAN ANSLEY, Professor of
    Law, University of Tennessee
    College of Law; ELVIA R. ARRIOLA,
    Associate Professor of Law,
    Northern Illinois University College
    of Law; FRANK ASKIN, Professor of
    Law and Robert Knowlton Scholar,
    Rutgers School of Law at Newark;
    MILNER S. BALL, Caldwell Professor
    of Constitutional Law, University of
    Georgia School of Law; JON BAUER,
    Clinical Professor of Law and
    Director, Asylum & Human Rights
    Clinic University of Connecticut
    School of Law; PAUL SCHIFF
    BERMAN, Associate Professor,
    University of Connecticut School of     
    Law; CYNTHIA BOWMAN, Professor
    of Law, Northwestern University
    School of Law; MARK S. BRODIN,
    Professor of Law, Boston College
    Law School; BARTRAM S. BROWN,
    Professor of Law, Chicago-Kent
    College of Law, Illinois Institute of
    Technology; SUE BRYANT, Director
    of Clinical Education and Associate
    Professor of Law, CUNY School of
    Law; BURTON CAINE, Professor of
    Law, Temple University School of
    Law; EMILY CALHOUN, Professor of
    Law, University of Colorado School
    of Law; ANUPAM CHANDER, Acting
    Professor of Law, University of
    California, Davis, School of Law;
    
    HAMDI v. RUMSFELD   3
    ERWIN CHEMERINSKY, Sydney M.           
    Irmas Professor of Public Interest
    Law, Legal Ethics and Political
    Science, University of Southern
    California Law School; PAUL G.
    CHEVIGNY, Joel S. and Anne B.
    Ehrenkranz Professor of Law, New
    York University Law School; PAUL
    CHILL, Clinical Professor of Law,
    University of Connecticut School of
    Law; GABRIEL J. CHIN, Rufus King
    Professor of Law, University of
    Cincinnati College of Law; CAROL
    CHOMSKY, Associate Professor of
    Law, University of Minnesota Law
    School; MARGARET CHON, Associate
    Professor of Law, Seattle University
    School of Law; MARJORIE COHN,          
    Associate Professor of Law,
    Thomas Jefferson School of Law,
    San Diego; ROBIN MORRIS COLLIN,
    Professor of Law, University of
    Oregon School of Law; DENNIS E.
    CURTIS, Clinical Professor of Law,
    Yale Law School; ERIN DALY,
    Associate Professor of Law,
    Widener University; MICHAEL H.
    DAVIS, Professor of Law, Cleveland
    State University; MICHAEL DEUTSCH,
    Adjunct Professor of Law,
    Northwestern University School of
    Law; LAURA DICKINSON, Associate
    Professor, University of Connecticut
    School of Law; ROBERT DINERSTEIN,
    Associate Dean and Professor of
    
    4                         HAMDI v. RUMSFELD
    Law, American University,                 
    Washington College of Law; JANE
    DOLKART, Associate Professor of
    Law, Dedman School of Law,
    Southern Methodist University;
    SHARON DOLOVICH, Acting Professor
    of Law, University of California at
    Los Angeles; DOUGLAS L. DONOHO,
    Professor of Law, Nova
    Southeastern University, Shepard
    Broad Law Center; DOLORES
    DONOVAN, Professor of Law,
    University of San Francisco School
    of Law; MARY L. DUDZIAK, Judge
    Edward J. and Ruey L. Guirado
    Professor of Law and History,
    University of Southern California
    Law School; Visiting Research             
    Scholar, Woodrow Wilson School
    of Public and International Affairs,
    Princeton University; PAMELA
    EDWARDS, Assistant Professor of
    Law, CUNY School of Law; NANCY
    EHRENREICH, Associate Professor of
    Law, University of Denver College
    of Law; ROSA EHRENREICH BROOKS,
    Associate Professor of Law,
    University of Virginia School of
    Law; J. SOFFIYAH ELIJAH, Clinical
    Instructor, Criminal Justice Institute,
    Harvard Law School; SUSAN J.
    FEATHERS, Esq., Director, Public
    Service Program, University of
    Pennsylvania Law School; MARVIN
    FEIN, Associate Professor,
    
    HAMDI v. RUMSFELD   5
    University of Pittsburgh School of    
    Law; TODD D. FERNOW, Professor of
    Law, Director, Criminal Clinic,
    University of Connecticut School of
    Law; SALLY FRANK, Professor of
    Law, Drake University School of
    Law; KATHERINE FRANKE, Professor
    of Law, Columbia University; ERIC
    M. FREEDMAN, Professor of Law,
    Hofstra University School of Law;
    NIELS W. FRENZEN, Clinical
    Assistant Professor of Law,
    University of Southern California;
    CRAIG B. FUTTERMAN, Assistant
    Clinical Professor of Law,
    University of Chicago Law School;
    KRISTIN BOOTH GLEN, Dean and
    Professor of Law, CUNY School of
    Law; BRIAN GLICK, Associate           
    Clinical Professor of Law, Fordham
    Law School; HOWARD A.
    GLICKSTEIN, Dean and Professor of
    Law, Touro Law School; PHYLLIS
    GOLDFARB, Professor of Law,
    Boston College Law School; BOB
    GOLTEN, Director, International
    Human Rights Advocacy Center,
    University of Denver; CARLOS E.
    GONZALEZ, Associate Professor of
    Law, Rutgers School of Law -
    Newark; Visiting Associate
    Professor of Law, Santa Clara
    University School of Law; KENNETH
    W. GRAHAM, JR., Professor of Law,
    University of California at Los
    Angeles; ARIELA GROSS,
    
    6                       HAMDI v. RUMSFELD
    Professor of Law & History, The        
    Law School, University of Southern
    California; LOUISE HALPER, Professor
    of Law, Washington & Lee
    University School of Law; JOEL F.
    HANDLER, Richard C. Maxwell
    Professor of Law and Professor of
    Policy Studies, School of Public
    Policy and Social Research,
    University of California at Los
    Angeles; SIDNEY L. HARRING,
    Professor of Law, CUNY Law
    School; VIRGINIA HENCH, Associate
    Professor of Criminal Law &
    Procedure & Civil Rights,
    University of Hawaii - Manoa;          
    KATHY HESSLER, Professor, Case
    Western Reserve University School
    of Law; JUDITH L. HOLMES, Assistant
    Professor of Legal Studies,
    University of Massachusetts -
    Amherst; WYTHE W. HOLT, JR.,
    University Research Professor of
    Law, University of Alabama School
    of Law; JOAN HOWARTH, Professor
    of Law, University of Nevada, Las
    Vegas; MARSHA HUIE, Professor of
    Law, The University of Tulsa
    College of Law; ERIC S. JANUS,
    Professor of Law, William Mitchell
    
    HAMDI v. RUMSFELD   7
    College of Law; PAULA C. JOHNSON,     
    Associate Professor of Law,
    Syracuse University College of
    Law; JOSE R. JUAREZ, JR., Professor
    of Law, St. Mary’s University
    School of Law; DAVID KAIRYS,
    James E. Beasley Professor of Law,
    Beasley School of Law, Temple
    University; YALE KAMISAR, Clarence
    Darrow Distinguished University
    Professor of Law, University of
    Michigan; JERRY KANG, Professor of
    Law, University of California at
    Los Angeles; LEWIS R. KATZ, John
    C. Hutchins Professor of Law, Case
    Western Reserve University Law
    School; EILEEN KAUFMAN, Professor
    of Law, Touro Law School;             
    MICHAEL J. KELLY, Assistant
    Professor, Creighton University
    School of Law; RANETA LAWSON
    MACK, Professor of Law, Creighton
    University School of Law; DAVID P.
    LEONARD, Professor of Law and
    William M. Rains Fellow, Loyola
    Law School, Los Angeles; JOHN
    LEUBSDORF, Professor of Law,
    Rutgers Law School - Newark;
    MARTIN L. LEVY, Professor,
    Thurgood Marshall School of Law,
    Texas Southern University; JULES
    LOBEL, Professor of Law, University
    of Pittsburgh Law School; DAVID
    LUBAN, Frederick Haas Professor of
    
    8                       HAMDI v. RUMSFELD
    Law and Philosophy, Georgetown         
    University Law Center; BETH LYON,
    Assistant Professor of Law,
    Villanova University School of
    Law; HOLLY MAGUIGAN, Professor of
    Clinical Law, New York University
    School of Law; SAMUEL A.
    MARCOSSON, Associate Professor,
    Louis D. Brandeis School of Law,
    University of Louisville; GARY M.
    MAVEAL, Associate Professor of
    Law, University of Detroit Mercy
    School of Law; ROBERT F.
    MEAGHER, Emeritus Professor,
    Fletcher School of Law and
    Diplomacy, Tufts University;
    CARLIN MEYER, Professor of Law,
    New York Law School; JONATHAN          
    M. MILLER, Professor of Law,
    Southwestern University School of
    Law; MARGARET E. MONTOYA,
    Professor of Law, University of
    New Mexico School of Law;
    BEVERLY MORAN, Professor of Law,
    Professor of Sociology, Vanderbilt
    University School of Law; DAVID A.
    MORAN, Assistant Professor of Law,
    Wayne State University Law
    School; MARY-BETH MOYLAN,
    Instructor of Law, University of the
    Pacific, McGeorge School of Law;
    MILLARD A. MURPHY, Esq., Clinical
    Instructor, Prison Law Clinic,
    University of California, Davis,
    School of Law; KENNETH B. NUNN,
    
    HAMDI v. RUMSFELD   9
    Professor of Law, Fredric G. Levin     
    College of Law, University of
    Florida; JAMES P. OGILVY, Associate
    Professor of Law, Columbus School
    of Law, The Catholic University of
    America; NANCY K. OTA, Professor
    of Law, Albany Law School; MARC
    R. POIRIER, Professor of Law, Seton
    Hall Law School; JAMES POPE,
    Professor of Law and Sidney
    Reitman Scholar, Rutgers University
    School of Law; DEBORAH W. POST,
    Professor of Law, Touro Law
    School; WILLIAM QUIGLEY, Professor
    of Law and Director of the Loyola
    Law Clinic & the Gillis Long
    Poverty Law Center, Loyola Law         
    School; MARGARET JANE RADIN,
    Wm. Benjamin Scott and Luna M.
    Scott Professor of Law, Stanford
    Law School; MARTHA RAYNER,
    Associate Clinical Professor of Law,
    Fordham University School of Law;
    JUDITH RESNICK, Arthur Liman
    Professor of Law, Yale Law School;
    PAULA R. RHODES, Associate
    Professor of Law, Director, LLM in
    American and Comparative Law
    Program, University of Denver
    College of Law; HENRY J.
    RICHARDSON, III, Peter J. Liacouras
    Professor of Law, Temple Law
    School; ANNELISE RILES,
    
    10                     HAMDI v. RUMSFELD
    Professor of Law and Professor of     
    Anthropology, Cornell University;
    TONI ROBINSON, Professor of Law,
    Quinnipiac School of Law;
    FLORENCE WAGMAN ROISMAN,
    Professor of Law and Paul Beam
    Fellow, Indiana University School
    of Law-Indianapolis; KERMIT
    ROOSEVELT, Assistant Professor,
    University of Pennsylvania Law
    School; TANINA ROSTAIN, Associate
    Professor, New York Law School;
    JED RUBENFELD, Robert R. Slaughter
    Professor of Law, Yale University;
    DAVID RUDOVSKY, Senior Fellow,
    University of Pennsylvania Law
    School; LEILA NADYA SADAT,            
    Professor of Law, Washington
    University in St. Louis; NATSU
    TAYLOR SAITO, Professor of Law,
    Georgia State University College of
    Law; ROBERT F. SEIBEL, Professor of
    Law, CUNY Law School; FRANKLIN
    SIEGEL, City University of New
    York School of Law; ROBERT A.
    SEDLER, Distinguished Professor of
    Law and Gibbs Chair in Civil
    Rights and Civil Liberties, Wayne
    State University; MARCI SEVILLE,
    Associate Professor of Law and
    Director, Women’s Employment
    Rights Clinic, Golden Gate
    University School of Law;
    
    HAMDI v. RUMSFELD   11
    MARJORIE SILVER, Professor, Touro      
    Law Center; EILEEN SILVERSTEIN,
    Zephaniah Swift Professor of Law,
    University of Connecticut; DAVID
    SLOSS, Assistant Professor of Law,
    Saint Louis University School of
    Law; RONALD C. SLYE, Associate
    Professor, Seattle University School
    of Law; LLOYD B. SNYDER,
    Professor of Law, Cleveland State
    University; ANDREJ THOMAS STARKIS,
    Assistant Professor of Law,
    Massachusetts School of Law;
    NORMAN STEIN, Douglas Arant
    Professor of Law, University of
    Alabama School of Law; JOAN
    STEINMAN, Distinguished Professor      
    of Law, Chicago-Kent College of
    Law; ROBERT N. STRASSFELD,
    Professor of Law, Case Western
    Reserve University School of Law;
    ROBERT L. TSAI, Assistant Professor
    of Law, University of Oregon
    School of Law; BETH VAN SCHAACK,
    Assistant Professor, Santa Clara
    University School of Law; DEBORAH
    M. WEISSMAN, Associate Professor
    of Law and Director of Clinical
    Programs, University of North
    Carolina School of Law; CHARLES
    E. WILSON, Associate Professor of
    Law, The Ohio State University
    
    12                     HAMDI v. RUMSFELD
    College of Law; RICHARD J. WILSON,   
    Professor, Washington College of
    Law, American University; ADAM
    WINKLER, Acting Professor of Law,
    University of California at Los
    Angeles; STEPHEN WIZNER, William
    O. Douglas Clinical Professor of
    Law and Supervising Attorney, Yale
    Law School; MARK E. WOJCIK,
    Associate Professor of Law, The
    John Marshall Law School,
    Chicago; FRANK H. WU, Professor
    of Law, Howard University; CLIFF
    ZIMMERMAN, Clinical Associate
    Professor of Law, Northwestern
    University; NATIONAL LAWYERS’        
    GUILD, Heidi Boghosian, Executive
    Director; NATIONAL IMMIGRATION
    PROJECT OF THE NATIONAL LAWYERS
    GUILD, Dan Kesselbrenner,
    Executive Director; NATIONAL
    LAWYERS GUILD NEW YORK CHAPTER,
    Dana Biberman, President; HUMAN
    RIGHTS WATCH, James Ross, Senior
    Legal Counsel; SOUTHERN POVERTY
    LAW CENTER, Rhonda Brownstein,
    Legal Director; UNITARIAN
    UNIVERSALIST SERVICE COMMITTEE,
    Denise Moorehead, Deputy Director
    of Program; PUERTO RICO LEGAL
    DEFENSE AND EDUCATION FUND,
    
    HAMDI v. RUMSFELD   13
    INCORPORATED, Foster Maer, Acting     
    Legal Director; NATIONAL
    COALITION TO PROTECT POLITICAL
    FREEDOM, Kit Gage, President; FIRST
    AMENDMENT FOUNDATION, Kit Gage,
    Director; NATIONAL LAWYER’S
    GUILD/MAURICE & JANE SUGAR LAW
    CENTER FOR ECONOMIC & SOCIAL
    JUSTICE, Julie Hurwitz, Executive
    Director; CIVIL LIBERTIES
    MONITORING PROJECT, Jared
    Rossman, President; ASSOCIATION OF
    LEGAL AID ATTORNEYS, U.A.W.
    LOCAL 2325, Michael Letwin,
    Esq., President; PARTNERSHIP FOR
    CIVIL JUSTICE, Mara Verheyden-        
    Hilliard, co-founder; TRIAL
    LAWYERS FOR PUBLIC JUSTICE,
    Rebecca Epstein, Staff Attorney;
    FREEDOM SOCIALIST PARTY, Val
    Carlson; JEWISH ALLIANCE FOR
    LAW AND SOCIAL ACTION, Andrew
    M. Fischer; THE INNOCENCE
    PROJECT AT THE BENJAMIN N.
    CARDOZO SCHOOL OF LAW, Nina
    Morrison, Esq., Executive Director;
    ELLA BAKER CENTER FOR HUMAN
    RIGHTS, Van Jones, National
    Executive Director; AMERICAN
    FRIENDS SERVICE COMMITTEE, Mary
    Ellen McNish, General Secretary;
    
    14                       HAMDI v. RUMSFELD
    REBER BOULT, Esq., Albuquerque,         
    New Mexico; HUNTER GRAY; JOHN
    MAGE, Esq., New York, New York;
    DOUGLAS N. MASTERS, Esq.,
    Chicago, Illinois; LAURA BETH
    NIELSEN, Research Fellow, American
    Bar Foundation; LEONARD
    WEINGLASS, Esq., New York, New
    York; CAMILLE WHITWORTH, Esq.,
    Austin, Texas; MITCHELL
    ZIMMERMAN, Esq., Co-Coordinator,
    Law Professors for the Rule of
    Law; NATIONAL ASSOCIATION OF
    CRIMINAL DEFENSE LAWYERS;
    AMERICAN CIVIL LIBERTIES UNION
    FOUNDATION; AMERICAN CIVIL
    LIBERTIES FOUNDATION OF VIRGINIA;
    Amici Curiae in support
    
    of Appellees.
    RUTH WEDGWOOD, Professor of Law,
    Yale University Law School;
    SAMUEL ESTREICHER, Professor of
    Law, New York University School
    of Law; DOUGLAS W. KMIEC, Dean
    & St. Thomas More Professor of
    Law, Catholic University; RONALD
    ROTUNDA, George Mason University
    Foundation Professor of Law,
    George Mason University School of
    Law; DAVID B. RIVKIN, JR.; LEE A.
    CASEY; DARIN R. BARTRAM,
    Amici Curiae in support
    of Appellants.
    
    HAMDI v. RUMSFELD                        15
    Appeal from the United States District Court
    for the Eastern District of Virginia, at Norfolk.
    Robert G. Doumar, Senior District Judge.
    (CA-02-439-2)
    Argued: October 28, 2002
    Decided: January 8, 2003
    Before WILKINSON, Chief Judge, and WILKINS and
    TRAXLER, Circuit Judges.
    Reversed and remanded with directions to dismiss by published opin-
    ion. Opinion by WILKINSON, Chief Judge, and WILKINS and
    TRAXLER, Circuit Judges, in which all three concur.
    COUNSEL
    ARGUED: Paul Clement, Deputy Solicitor General, UNITED
    STATES DEPARTMENT OF JUSTICE, Washington, D.C., for
    Appellants. Frank Willard Dunham, Jr., Federal Public Defender,
    Norfolk, Virginia, for Appellees. ON BRIEF: Paul J. McNulty,
    United States Attorney, Gregory G. Garre, Assistant to the Solicitor
    General, David B. Salmons, Assistant to the Solicitor General, Law-
    rence R. Leonard, Managing Assistant United States Attorney,
    UNITED STATES DEPARTMENT OF JUSTICE, Washington,
    D.C., for Appellants. Larry W. Shelton, Assistant Federal Public
    Defender, Geremy C. Kamens, Assistant Federal Public Defender,
    Norfolk, Virginia, for Appellees. David B. Rivkin, Jr., Lee A. Casey,
    Darin R. Bartram, BAKER & HOSTETLER, L.L.P., Washington,
    D.C., for Amici Curiae Ruth Wedgwood, et al. Shayana Kadidal, Bar-
    bara Olshansky, Michael Ratner, William Goodman, CENTER FOR
    CONSTITUTIONAL RIGHTS, New York, New York, for Amici
    Curiae Center for Constitutional Rights, et al. Steven D. Benjamin,
    Richmond, Virginia; Donald G. Rehkopf, Jr., BRENNA & BRENNA,
    Rochester, New York, for Amicus Curiae Association of Criminal
    16                         HAMDI v. RUMSFELD
    Defense Lawyers. Steven R. Shapiro, Lucas Guttentag, Arthur N.
    Eisenberg, Robin Goldfaden, AMERICAN CIVIL LIBERTIES
    UNION FOUNDATION, New York, New York; Rebecca K. Glen-
    berg, AMERICAN CIVIL LIBERTIES UNION OF VIRGINIA,
    Richmond, Virginia, for Amici Curiae ACLU, et al.
    OPINION
    WILKINSON, Chief Judge, and WILKINS and TRAXLER, Circuit
    Judges:
    Yaser Esam Hamdi filed a petition under 
    28 U.S.C. § 2241
     chal-
    lenging the lawfulness of his confinement in the Norfolk Naval Brig.1
    On this third and latest appeal, the United States challenges the dis-
    trict court’s order requiring the production of various materials
    regarding Hamdi’s status as an alleged enemy combatant. The district
    court certified for appeal the question of whether a declaration by a
    Special Advisor to the Under Secretary of Defense for Policy setting
    forth what the government contends were the circumstances of
    Hamdi’s capture was sufficient by itself to justify his detention.
    Because it is undisputed that Hamdi was captured in a zone of active
    combat in a foreign theater of conflict, we hold that the submitted
    declaration is a sufficient basis upon which to conclude that the Com-
    mander in Chief has constitutionally detained Hamdi pursuant to the
    war powers entrusted to him by the United States Constitution. No
    further factual inquiry is necessary or proper, and we remand the case
    with directions to dismiss the petition.
    I.
    As recounted in earlier appeals regarding Hamdi’s detention,
    Hamdi v. Rumsfeld, 
    294 F.3d 598
     (4th Cir. 2002) ("Hamdi I"), and
    Hamdi v. Rumsfeld, 
    296 F.3d 278
     (4th Cir. 2002) ("Hamdi II"), the
    1
    The court expresses its appreciation to the Public Defender’s Office
    for the Eastern District of Virginia, the United States Attorney’s Office
    for the Eastern District of Virginia, and the Solicitor General’s Office for
    the professionalism of their efforts throughout these expedited appeals.
    HAMDI v. RUMSFELD                            17
    al Qaida terrorist network, utilizing commercial airliners, launched
    massive attacks on the United States on September 11, 2001, success-
    fully striking the World Trade Center in New York City, and the Pen-
    tagon, the military headquarters of our country, near Washington,
    D.C. A third unsuccessful attack upon at least one additional target,
    most likely within Washington, D.C., was foiled by the efforts of the
    passengers and crew on the highjacked airliner when it crashed in
    Somerset County, Pennsylvania, southeast of Pittsburgh. In total, over
    3,000 people were killed on American soil that day.
    In the wake of this atrocity, Congress authorized the President "to
    use all necessary and appropriate force against those nations, organi-
    zations, or persons he determines planned, authorized, committed, or
    aided the terrorist attacks" or "harbored such organizations or per-
    sons." Authorization for Use of Military Force, Pub. L. No. 107-40,
    
    115 Stat. 224
     (Sept. 18, 2001). The President responded by ordering
    United States armed forces to Afghanistan to subdue al Qaida and the
    governing Taliban regime supporting it. During this ongoing military
    operation, thousands of alleged enemy combatants, including Hamdi,
    have been captured by American and allied forces.
    The present case arises out of Hamdi’s detention by the United
    States military in Norfolk, Virginia. Hamdi apparently was born in
    Louisiana but left for Saudi Arabia when he was a small child.
    Although initially detained in Afghanistan and then Guantanamo Bay,
    Hamdi was transferred to the Norfolk Naval Station Brig after it was
    discovered that he may not have renounced his American citizenship.
    He has remained in Norfolk since April 2002.
    In June 2002, Hamdi’s father, Esam Fouad Hamdi, filed a petition
    for writ of habeas corpus, naming as petitioners both Hamdi and him-
    self as next friend.2 The petition alleged that Hamdi is a citizen of the
    United States who was residing in Afghanistan when he was seized
    2
    This court has previously determined that Esam Fouad Hamdi is a
    proper next friend. Hamdi I, 
    294 F.3d at
    600 n.1. Two earlier petitions
    filed by the Federal Public Defender for the Eastern District of Virginia
    Frank Dunham and Christian Peregrim, a private citizen from New Jer-
    sey, were dismissed. Neither Dunham nor Peregrim had a significant
    relationship with the detainee, and Hamdi’s father plainly did. 
    Id. at 606
    .
    18                         HAMDI v. RUMSFELD
    by the United States government. According to the petition, "[i]n the
    course of the military campaign, and as part of their effort to over-
    throw the Taliban, the United States provided military assistance to
    the Northern Alliance, a loosely-knit coalition of military groups
    opposed to the Taliban Government," and thereby "obtained access to
    individuals held by various factions of the Northern Alliance." The
    petition further alleges that "Hamdi was captured or transferred into
    the custody of the United States in the Fall of 2001" in Afghanistan,
    transported from Afghanistan to Camp X-Ray at the United States
    Naval Base in Guantanamo Bay, Cuba, in January 2002, and ulti-
    mately transferred to the Norfolk Naval Station Brig in Norfolk, Vir-
    ginia, in April 2002.
    Although acknowledging that Hamdi was seized in Afghanistan
    during a time of active military hostilities, the petition alleges that "as
    an American citizen, . . . Hamdi enjoys the full protections of the
    Constitution," and that the government’s current detention of him in
    this country without charges, access to a judicial tribunal, or the right
    to counsel, "violate[s] the Fifth and Fourteenth Amendments to the
    United States Constitution." By way of relief, the petition asks, inter
    alia, that the district court: (1) "Order Respondents to cease all inter-
    rogations of Yaser Esam Hamdi, direct or indirect, while this litiga-
    tion is pending"; (2) "Order and declare that Yaser Esam Hamdi is
    being held in violation of the Fifth and Fourteenth Amendments to the
    United States Constitution"; (3) "To the extent Respondents contest
    any material factual allegations in th[e] Petition, schedule an evidenti-
    ary hearing, at which Petitioners may adduce proof in support of their
    allegations"; and (4) "Order that Petitioner Yaser Esam Hamdi be
    released from Respondents’ unlawful custody."
    On June 11, before the government had time to respond to the peti-
    tion, the district court appointed Public Defender Frank Dunham as
    counsel for the detainee and ordered the government to allow the
    Defender unmonitored access to Hamdi. On July 12, we reversed the
    district court’s order granting counsel immediate access to Hamdi.
    Hamdi II, 
    296 F.3d at 279
    . We cautioned that Hamdi’s petition
    involved complex and serious national security issues and found that
    the district court had not shown proper deference to the government’s
    legitimate security and intelligence interests. We did not order the
    petition dismissed outright, however, noting our reluctance to "em-
    HAMDI v. RUMSFELD                           19
    brac[e] [the] sweeping proposition . . . that, with no meaningful judi-
    cial review, any American citizen alleged to be an enemy combatant
    could be detained indefinitely without charges or counsel on the gov-
    ernment’s say-so." 
    Id. at 283
    . Rather, we sanctioned a limited and
    deferential inquiry into Hamdi’s status, noting "that if Hamdi is
    indeed an ‘enemy combatant’ who was captured during hostilities in
    Afghanistan, the government’s present detention of him is a lawful
    one." 
    Id.
     (citing Ex parte Quirin, 
    317 U.S. 1
    , 31, 37 (1942)). We also
    instructed that, in conducting the inquiry, "the district court must con-
    sider the most cautious procedures first, conscious of the prospect that
    the least drastic procedures may promptly resolve Hamdi’s case and
    make more intrusive measures unnecessary." Id. at 284.
    Following this remand, the district court held a hearing on July 18.
    During this hearing, the court expressed its concern over possible vio-
    lations of Hamdi’s rights as an American citizen. The court also ques-
    tioned the government’s most basic contentions regarding the ongoing
    hostilities, asking "with whom is the war I should suggest that we’re
    fighting?" and "will the war never be over as long as there is any
    member [or] any person who might feel that they want to attack the
    United States of America or the citizens of the United States of Amer-
    ica?" The court directed that "[a]ll of these [answers should] be pro-
    vided in the answer that the government is to file to the petition" and
    directed the United States to file such a response to Hamdi’s petition
    by July 25.
    On July 25, the government filed a response to, and motion to dis-
    miss, the petition for a writ of habeas corpus. Attached to its response
    was an affidavit from the Special Advisor to the Under Secretary of
    Defense for Policy, Michael Mobbs, which confirms the material fac-
    tual allegations in Hamdi’s petition — specifically, that Hamdi was
    seized in Afghanistan by allied military forces during the course of
    the sanctioned military campaign, designated an "enemy combatant"
    by our Government, and ultimately transferred to the Norfolk Naval
    Brig for detention. Thus, it is undisputed that Hamdi was captured in
    Afghanistan during a time of armed hostilities there. It is further
    undisputed that the executive branch has classified him as an enemy
    combatant.
    In addition to stating that Hamdi has been classified as an enemy
    combatant, the Mobbs declaration went on further to describe what
    20                        HAMDI v. RUMSFELD
    the government contends were the circumstances surrounding
    Hamdi’s seizure, his transfer to United States custody, and his place-
    ment in the Norfolk Naval Brig. According to Mobbs, the military
    determined that Hamdi "traveled to Afghanistan in approximately
    July or August of 2001" and proceeded to "affiliate[ ] with a Taliban
    military unit and receive[ ] weapons training." While serving with the
    Taliban in the wake of September 11, he was captured when his Tali-
    ban unit surrendered to Northern Alliance forces with which it had
    been engaged in battle. He was in possession of an AK-47 rifle at the
    time of surrender. Hamdi was then transported with his unit from
    Konduz, Afghanistan to the Northern Alliance prison in Mazar-e-
    Sharif, Afghanistan and, after a prison uprising there, to a prison at
    Sheberghan, Afghanistan. Hamdi was next transported to the U.S.
    short term detention facility in Kandahar, and then transferred again
    to Guantanamo Bay and eventually to the Norfolk Naval Brig.
    According to Mobbs, interviews with Hamdi confirmed the details of
    his capture and his status as an enemy combatant.
    In keeping with our earlier instruction that the district court should
    proceed cautiously in reviewing military decisions reached during
    sanctioned military operations, we directed the district court to first
    "consider the sufficiency of the Mobbs declaration as an independent
    matter before proceeding further." Following this order, the district
    court held a hearing on August 13 to review the sufficiency of the
    Mobbs declaration.
    During this hearing, the district court recognized that "the govern-
    ment is entitled to considerable deference in detention decisions dur-
    ing hostilities." The court also noted that it did not "have any doubts
    [Hamdi] had a firearm [or] any doubts he went to Afghanistan to be
    with the Taliban." Despite these observations, however, the court
    asserted that it was "challenging everything in the Mobbs’ declara-
    tion" and that it intended to "pick it apart" "piece by piece." The court
    repeatedly referred to information it felt was missing from the decla-
    ration, asking "Is there anything in here that said Hamdi ever fired a
    weapon?" The court questioned whether Mr. Mobbs was even a gov-
    ernment employee and intimated that the government was possibly
    hiding disadvantageous information from the court.
    The district court filed an opinion on August 16, finding that the
    Mobbs declaration "falls far short" of supporting Hamdi’s detention.
    HAMDI v. RUMSFELD                           21
    The court ordered the government to turn over, among other things,
    copies of Hamdi’s statements and the notes taken from any interviews
    with him; the names and addresses of all interrogators who have ques-
    tioned Hamdi; statements by members of the Northern Alliance
    regarding the circumstances of Hamdi’s surrender; and a list of the
    date of Hamdi’s capture and all of the dates and locations of his sub-
    sequent detention.
    Upon the Government’s motion to certify the August 16 production
    order for immediate appeal, the district court certified the following
    question: "Whether the Mobbs Declaration, standing alone, is suffi-
    cient as a matter of law to allow a meaningful judicial review of
    Yaser Esam Hamdi’s classification as an enemy combatant?" We then
    granted the Government’s petition for interlocutory review pursuant
    to 
    28 U.S.C.A. § 1292
    (b). In so doing, we noted that "this court ‘may
    address any issue fairly included within the certified order because it
    is the order that is appealable, and not the controlling question identi-
    fied by the district court.’" Hamdi v. Rumsfeld, No. 02-7338 (4th Cir.
    Sept. 12, 2002) (order granting petition for interlocutory review)
    (quoting Yamaha Motor Corp. v. Calhoun, 
    516 U.S. 199
    , 205 (1996)).
    II.
    Yaser Esam Hamdi is apparently an American citizen. He was also
    captured by allied forces in Afghanistan, a zone of active military
    operations. This dual status — that of American citizen and that of
    alleged enemy combatant — raises important questions about the role
    of the courts in times of war.
    A.
    The importance of limitations on judicial activities during wartime
    may be inferred from the allocation of powers under our constitu-
    tional scheme. "Congress and the President, like the courts, possess
    no power not derived from the Constitution." Ex parte Quirin, 
    317 U.S. 1
    , 25 (1942). Article I, section 8 grants Congress the power to
    "provide for the common Defence and general Welfare of the United
    States . . . To declare War, grant Letters of Marque and Reprisal, and
    make Rules concerning Captures on Land and Water; To raise and
    support armies . . . [and] To provide and maintain a navy." Article II,
    22                        HAMDI v. RUMSFELD
    section 2 declares that "[t]he President shall be Commander in Chief
    of the Army and Navy of the United States, and of the Militia of the
    several States, when called into the actual Service of the United
    States."
    The war powers thus invest "the President, as Commander in Chief,
    with the power to wage war which Congress has declared, and to
    carry into effect all laws passed by Congress for the conduct of war
    and for the government and regulation of the Armed Forces, and all
    laws defining and punishing offences against the law of nations,
    including those which pertain to the conduct of war." Quirin, 
    317 U.S. at 26
    . These powers include the authority to detain those cap-
    tured in armed struggle. Hamdi II, 
    296 F.3d at 281-82
    .3 These powers
    likewise extend to the executive’s decision to deport or detain alien
    enemies during the duration of hostilities, see Ludecke v. Watkins,
    
    335 U.S. 160
    , 173 (1948), and to confiscate or destroy enemy prop-
    erty, see Juragua Iron Co. v. United States, 
    212 U.S. 297
    , 306 (1909).
    Article III contains nothing analogous to the specific powers of war
    so carefully enumerated in Articles I and II. "In accordance with this
    constitutional text, the Supreme Court has shown great deference to
    the political branches when called upon to decide cases implicating
    sensitive matters of foreign policy, national security, or military
    affairs." Hamdi II, 
    296 F.3d at 281
    .
    The reasons for this deference are not difficult to discern. Through
    their departments and committees, the executive and legislative
    branches are organized to supervise the conduct of overseas conflict
    in a way that the judiciary simply is not. The Constitution’s allocation
    of the warmaking powers reflects not only the expertise and experi-
    ence lodged within the executive, but also the more fundamental truth
    that those branches most accountable to the people should be the ones
    to undertake the ultimate protection and to ask the ultimate sacrifice
    from them. Thus the Supreme Court has lauded "[t]he operation of a
    3
    Persons captured during wartime are often referred to as "enemy com-
    batants." While the designation of Hamdi as an "enemy combatant" has
    aroused controversy, the term is one that has been used by the Supreme
    Court many times. See, e.g., Madsen v. Kinsella, 
    343 U.S. 341
    , 355
    (1952); In re Yamashita, 
    327 U.S. 1
    , 7 (1946); Quirin, 
    317 U.S. at 31
    .
    HAMDI v. RUMSFELD                            23
    healthy deference to legislative and executive judgments in the area
    of military affairs." Rostker v. Goldberg, 
    453 U.S. 57
    , 66 (1981).
    The deference that flows from the explicit enumeration of powers
    protects liberty as much as the explicit enumeration of rights. The
    Supreme Court has underscored this founding principle: "The ulti-
    mate purpose of this separation of powers is to protect the liberty and
    security of the governed." Metro. Wash. Airports Auth. v. Citizens for
    the Abatement of Aircraft Noise, Inc., 
    501 U.S. 252
    , 272 (1991).
    Thus, the textual allocation of responsibilities and the textual enumer-
    ation of rights are not dichotomous, because the textual separation of
    powers promotes a more profound understanding of our rights. For
    the judicial branch to trespass upon the exercise of the warmaking
    powers would be an infringement of the right to self-determination
    and self-governance at a time when the care of the common defense
    is most critical. This right of the people is no less a right because it
    is possessed collectively.
    These interests do not carry less weight because the conflict in
    which Hamdi was captured is waged less against nation-states than
    against scattered and unpatriated forces. We have emphasized that the
    "unconventional aspects of the present struggle do not make its stakes
    any less grave." Hamdi II, 
    296 F.3d at 283
    . Nor does the nature of the
    present conflict render respect for the judgments of the political
    branches any less appropriate. We have noted that the "political
    branches are best positioned to comprehend this global war in its full
    context," 
    id.,
     and neither the absence of set-piece battles nor the inter-
    vals of calm between terrorist assaults suffice to nullify the warmak-
    ing authority entrusted to the executive and legislative branches.
    B.
    Despite the clear allocation of war powers to the political branches,
    judicial deference to executive decisions made in the name of war is
    not unlimited. The Bill of Rights which Hamdi invokes in his petition
    is as much an instrument of mutual respect and tolerance as the Four-
    teenth Amendment is. It applies to American citizens regardless of
    race, color, or creed. And as we become a more diverse nation, the
    Bill of Rights may become even more a lens through which we recog-
    24                        HAMDI v. RUMSFELD
    nize ourselves. To deprive any American citizen of its protections is
    not a step that any court would casually take.
    Drawing on the Bill of Rights’ historic guarantees, the judiciary
    plays its distinctive role in our constitutional structure when it reviews
    the detention of American citizens by their own government. Indeed,
    if due process means anything, it means that the courts must defend
    the "fundamental principles of liberty and justice which lie at the base
    of all our civil and political institutions." Powell v. Alabama, 
    287 U.S. 45
    , 67 (1932) (internal quotation marks omitted). The Constitution is
    suffused with concern about how the state will wield its awesome
    power of forcible restraint. And this preoccupation was not acciden-
    tal. Our forebears recognized that the power to detain could easily
    become destructive "if exerted without check or control" by an unre-
    strained executive free to "imprison, dispatch, or exile any man that
    was obnoxious to the government, by an instant declaration that such
    is their will and pleasure." 4 W. Blackstone, Commentaries on the
    Laws of England 349-50 (Cooley ed. 1899) (quoted in Duncan v.
    Louisiana, 
    391 U.S. 145
    , 151 (1968)).
    The duty of the judicial branch to protect our individual freedoms
    does not simply cease whenever our military forces are committed by
    the political branches to armed conflict. The Founders "foresaw that
    troublous times would arise, when rulers and people would . . . seek
    by sharp and decisive measures to accomplish ends deemed just and
    proper; and that the principles of constitutional liberty would be in
    peril, unless established by irrepealable law." Ex Parte Milligan, 71
    U.S. (4 Wall.) 2, 120 (1866). While that recognition does not dispose
    of this case, it does indicate one thing: The detention of United States
    citizens must be subject to judicial review. See Hamdi II, 
    296 F.3d at 283
    .
    It is significant, moreover, that the form of relief sought by Hamdi
    is a writ of habeas corpus. In war as in peace, habeas corpus provides
    one of the firmest bulwarks against unconstitutional detentions. As
    early as 1789, Congress reaffirmed the courts’ common law authority
    to review detentions of federal prisoners, giving its explicit blessing
    to the judiciary’s power to "grant writs of habeas corpus for the pur-
    pose of an inquiry into the cause of commitment" for federal detain-
    ees. Act of Sept. 24, 1789, ch. 20, § 14, 
    1 Stat. 81
    -82. While the scope
    HAMDI v. RUMSFELD                            25
    of habeas review has expanded and contracted over the succeeding
    centuries, its essential function of assuring that restraint accords with
    the rule of law, not the whim of authority, remains unchanged.
    Hamdi’s petition falls squarely within the Great Writ’s purview, since
    he is an American citizen challenging his summary detention for rea-
    sons of state necessity.
    C.
    As the foregoing discussion reveals, the tensions within this case
    are significant. Such circumstances should counsel caution on the part
    of any court. Given the concerns discussed in the preceding sections,
    any broad or categorical holdings on enemy combatant designations
    would be especially inappropriate. We have no occasion, for example,
    to address the designation as an enemy combatant of an American cit-
    izen captured on American soil or the role that counsel might play in
    such a proceeding. See, e.g., Padilla v. Bush, No. 02 Civ. 445
    (MBM), 
    2002 WL 31718308
     (S.D.N.Y. Dec. 4, 2002). We shall, in
    fact, go no further in this case than the specific context before us —
    that of the undisputed detention of a citizen during a combat operation
    undertaken in a foreign country and a determination by the executive
    that the citizen was allied with enemy forces.
    The safeguards that all Americans have come to expect in criminal
    prosecutions do not translate neatly to the arena of armed conflict. In
    fact, if deference to the executive is not exercised with respect to mili-
    tary judgments in the field, it is difficult to see where deference would
    ever obtain. For there is a "well-established power of the military to
    exercise jurisdiction over members of the armed forces, those directly
    connected with such forces, [and] enemy belligerents, prisoners of
    war, [and] others charged with violating the laws of war." Duncan v.
    Kahanamoku, 
    327 U.S. 304
    , 313-14 (1946) (footnotes omitted). As
    we emphasized in our prior decision, any judicial inquiry into
    Hamdi’s status as an alleged enemy combatant in Afghanistan must
    reflect this deference as well as "a recognition that government has
    no more profound responsibility" than the protection of American cit-
    izens from further terrorist attacks. Hamdi II, 
    296 F.3d at 283
    .
    In this regard, it is relevant that the detention of enemy combatants
    serves at least two vital purposes. First, detention prevents enemy
    26                        HAMDI v. RUMSFELD
    combatants from rejoining the enemy and continuing to fight against
    America and its allies. "The object of capture is to prevent the cap-
    tured individual from serving the enemy. He is disarmed and from
    then on he must be removed as completely as practicable from the
    front . . . ." In re Territo, 
    156 F.2d 142
    , 145 (9th Cir. 1946). In this
    respect, "captivity is neither a punishment nor an act of vengeance,"
    but rather "a simple war measure." W. Winthrop, Military Law and
    Precedents 788 (2d ed. 1920). And the precautionary measure of dis-
    arming hostile forces for the duration of a conflict is routinely accom-
    plished through detention rather than the initiation of criminal
    charges. To require otherwise would impose a singular burden upon
    our nation’s conduct of war.
    Second, detention in lieu of prosecution may relieve the burden on
    military commanders of litigating the circumstances of a capture half-
    way around the globe. This burden would not be inconsiderable and
    would run the risk of "saddling military decision-making with the
    panoply of encumbrances associated with civil litigation" during a
    period of armed conflict. Hamdi II, 
    296 F.3d at 283-84
    . As the
    Supreme Court has recognized, "[i]t would be difficult to devise more
    effective fettering of a field commander than to allow the very ene-
    mies he is ordered to reduce to submission to call him to account in
    his own civil courts and divert his efforts and attention from the mili-
    tary offensive abroad to the legal defensive at home." Johnson v.
    Eisentrager, 
    339 U.S. 763
    , 779 (1950).4
    The judiciary is not at liberty to eviscerate detention interests
    directly derived from the war powers of Articles I and II. As the
    nature of threats to America evolves, along with the means of carry-
    ing those threats out, the nature of enemy combatants may change
    also. In the face of such change, separation of powers doctrine does
    4
    The government has contended that appointment of counsel for
    enemy combatants in the absence of charges would interfere with a third
    detention interest, that of gathering intelligence, by establishing an
    adversary relationship with the captor from the outset. See Hamdi II, 
    296 F.3d at 282
     (expressing concern that the June 11 order of the district
    court "does not consider what effect petitioner’s unmonitored access to
    counsel might have upon the government’s ongoing gathering of intelli-
    gence"). That issue, however, is not presented in this appeal.
    HAMDI v. RUMSFELD                           27
    not deny the executive branch the essential tool of adaptability. To the
    contrary, the Supreme Court has said that "[i]n adopting this flexible
    understanding of separation of powers, we simply have recognized
    Madison’s teaching that the greatest security against tyranny . . . lies
    not in a hermetic division among the Branches, but in a carefully
    crafted system of checked and balanced power within each Branch."
    Mistretta v. United States, 
    488 U.S. 361
    , 381 (1989). If anything, sep-
    aration of powers bears renewed relevance to a struggle whose
    unforeseeable dangers may demand significant actions to protect
    untold thousands of American lives.
    The designation of Hamdi as an enemy combatant thus bears the
    closest imaginable connection to the President’s constitutional
    responsibilities during the actual conduct of hostilities. We therefore
    approach this case with sensitivity to both the fundamental liberty
    interest asserted by Hamdi and the extraordinary breadth of warmak-
    ing authority conferred by the Constitution and invoked by Congress
    and the executive branch.
    III.
    After the district court issued its August 16 production order, it
    granted respondent’s motion for an interlocutory appeal of that order.
    The following question was certified for our review:
    Whether the Mobbs Declaration, standing alone, is suffi-
    cient as a matter of law to allow a meaningful judicial
    review of Yaser Esam Hamdi’s classification as an enemy
    combatant?
    As the Supreme Court has made clear, we are not limited to this
    single question. Rather, an appellate court may address any issue
    fairly included within the certified order, because "it is the order that
    is appealable, and not the controlling question identified by the dis-
    trict court." Yamaha Motor Corp., U.S.A. v. Calhoun, 
    516 U.S. 199
    ,
    205 (1996) (internal quotation marks omitted).
    On this appeal, it is argued that Hamdi’s detention is invalid even
    if the government’s assertions were entirely accurate. If that were
    28                        HAMDI v. RUMSFELD
    clearly the case, there would be no need for further discovery such as
    that detailed in the August 16 production order, because Hamdi’s
    detention would be invalid for reasons beyond the scope of any fac-
    tual dispute. Indeed, any inquiry into the August 16 production order
    or any discussion of the certified question would be unnecessary,
    because neither could suffice to justify a detention that, as a threshold
    matter, was otherwise unlawful. Moreover, the burden of the August
    16 order would necessarily outweigh any benefits if, quite indepen-
    dent of the disputed factual issues, Hamdi were already entitled to
    relief. See Fed. R. Civ. Proc. 26(b)(1)-(2). For that reason, any purely
    legal challenges to Hamdi’s detention are fairly includable within the
    scope of the certified order. See Juzwin v. Asbestos Corp., 
    900 F.2d 686
    , 692 (3d Cir. 1990) (stating that, on § 1292(b) review of an order
    denying a dispositive motion, an appellate court is "free to consider
    all grounds advanced in support of the grant of [the motion] and all
    grounds suggested for sustaining its denial" (internal quotation marks
    omitted)).
    In this vein, Hamdi and amici have in fact pressed two purely legal
    grounds for relief: 
    18 U.S.C. § 4001
    (a) and Article 5 of the Geneva
    Convention. We now address them both.
    5 A. 18
     U.S.C. § 4001 regulates the detentions of United States citizens.
    It states in full:
    (a)    No citizen shall be imprisoned or otherwise detained
    by the United States except pursuant to an Act of
    Congress.
    (b)(1) The control and management of Federal penal and
    correctional institutions, except military or naval
    5
    We reject at the outset one other claim that Hamdi has advanced in
    abbreviated form. He asserts that our approval of his continued detention
    means that the writ of habeas corpus has been unconstitutionally sus-
    pended. See U.S. Const. art. I, § 9. We find this unconvincing; the fact
    that we have not ordered the relief Hamdi requests is hardly equivalent
    to a suspension of the writ.
    HAMDI v. RUMSFELD                           29
    institutions, shall be vested in the Attorney General,
    who shall promulgate rules for the government
    thereof, and appoint all necessary officers and
    employees in accordance with the civil-service
    laws, the Classification Act, as amended[,] and the
    applicable regulations.
    (2)     The Attorney General may establish and conduct
    industries, farms, and other activities and classify
    the inmates; and provide for their proper govern-
    ment, discipline, treatment, care, rehabilitation, and
    reformation.
    
    18 U.S.C. § 4001
     (2002). Hamdi argues that there is no congressional
    sanction for his incarceration and that § 4001(a) therefore prohibits
    his continued detention. We find this contention unpersuasive.
    Even if Hamdi were right that § 4001(a) requires Congressional
    authorization of his detention, Congress has, in the wake of the Sep-
    tember 11 terrorist attacks, authorized the President to "use all neces-
    sary and appropriate force against those nations, organizations, or
    persons he determines planned, authorized, committed, or aided the
    terrorist attacks" or "harbored such organizations or persons." Autho-
    rization for Use of Military Force, Pub. L. No. 107-40, 
    115 Stat. 224
    (Sept. 18, 2001) (emphasis added). As noted above, capturing and
    detaining enemy combatants is an inherent part of warfare; the "nec-
    essary and appropriate force" referenced in the congressional resolu-
    tion necessarily includes the capture and detention of any and all
    hostile forces arrayed against our troops. Furthermore, Congress has
    specifically authorized the expenditure of funds for "the maintenance,
    pay, and allowances of prisoners of war [and] other persons in the
    custody of the [military] whose status is determined . . . to be similar
    to prisoners of war." 
    10 U.S.C. § 956
    (5) (2002). It is difficult if not
    impossible to understand how Congress could make appropriations
    for the detention of persons "similar to prisoners of war" without also
    authorizing their detention in the first instance.
    Any alternative construction of these enactments would be fraught
    with difficulty. As noted above, the detention of enemy combatants
    serves critical functions. Moreover, it has been clear since at least
    30                       HAMDI v. RUMSFELD
    1942 that "[c]itizenship in the United States of an enemy belligerent
    does not relieve him from the consequences of [his] belligerency."
    Quirin, 
    317 U.S. at 37
    . If Congress had intended to override this well-
    established precedent and provide American belligerents some immu-
    nity from capture and detention, it surely would have made its inten-
    tions explicit.
    It is likewise significant that § 4001(a) functioned principally to
    repeal the Emergency Detention Act. That statute had provided for
    the preventive "apprehension and detention" of individuals inside the
    United States "deemed likely to engage in espionage or sabotage"
    during "internal security emergencies." H.R. Rep. 92-116, at 2 (Apr.
    6, 1971). Proponents of the repeal were concerned that the Emergency
    Detention Act might, inter alia, "permit[ ] a recurrence of the round
    ups which resulted in the detention of Americans of Japanese ancestry
    in 1941 and subsequently during World War II." Id. There is no indi-
    cation that § 4001(a) was intended to overrule the longstanding rule
    that an armed and hostile American citizen captured on the battlefield
    during wartime may be treated like the enemy combatant that he is.
    We therefore reject Hamdi’s contention that § 4001(a) bars his deten-
    tion.
    B.
    Hamdi and amici also contend that Article 5 of the Geneva Con-
    vention applies to Hamdi’s case and requires an initial formal deter-
    mination of his status as an enemy belligerent "by a competent
    tribunal." Geneva Convention Relative to the Treatment of Prisoners
    of War, Aug. 12, 1949, art. 5, 6 U.S.T. 3316, 75 U.N.T.S. 135.
    This argument falters also because the Geneva Convention is not
    self-executing. "Courts will only find a treaty to be self-executing if
    the document, as a whole, evidences an intent to provide a private
    right of action." Goldstar (Panama) v. United States, 
    967 F.2d 965
    ,
    968 (4th Cir. 1992). The Geneva Convention evinces no such intent.
    Certainly there is no explicit provision for enforcement by any form
    of private petition. And what discussion there is of enforcement
    focuses entirely on the vindication by diplomatic means of treaty
    rights inhering in sovereign nations. If two warring parties disagree
    about what the Convention requires of them, Article 11 instructs them
    HAMDI v. RUMSFELD                            31
    to arrange a "meeting of their representatives" with the aid of diplo-
    mats from other countries, "with a view to settling the disagreement."
    Geneva Convention, at art. 11. Similarly, Article 132 states that "any
    alleged violation of the Convention" is to be resolved by a joint trans-
    national effort "in a manner to be decided between the interested Par-
    ties." 
    Id.
     at art. 132; cf. 
    id.
     at arts. 129-30 (instructing signatories to
    enact legislation providing for criminal sanction of "persons commit-
    ting . . . grave breaches of the present Convention"). We therefore
    agree with other courts of appeals that the language in the Geneva
    Convention is not "self-executing" and does not "create private rights
    of action in the domestic courts of the signatory countries." Huynh
    Thi Anh v. Levi, 
    586 F.2d 625
    , 629 (6th Cir. 1978) (applying identical
    enforcement provisions from the Geneva Convention Relative to the
    Protection of Civilian Persons in Time of War, Feb. 2, 1956, 6 U.S.T.
    3516, 75 U.N.T.S. 287); see also Holmes v. Laird, 
    459 F.2d 1211
    ,
    1222 (D.C. Cir. 1972) (noting that "corrective machinery specified in
    the treaty itself is nonjudicial").
    Hamdi provides no reason to conclude that 
    28 U.S.C. § 2241
    makes these diplomatically-focused rights enforceable by a private
    right of petition. Indeed, it would make little practical sense for
    § 2241 to have done so, since we would have thereby imposed on the
    United States a mechanism of enforceability that might not find an
    analogue in any other nation. This is not to say, of course, that the
    Geneva Convention is meaningless. Rather, its values are vindicated
    by diplomatic means and reciprocity, as specifically contemplated by
    Article 132. There is a powerful and self-regulating national interest
    in observing the strictures of the Convention, because prisoners are
    taken by both sides of any conflict. This is the very essence of reci-
    procity and, as the drafters of the Convention apparently decided, the
    most appropriate basis for ensuring compliance. As the Court in
    Eisentrager observed about the predecessor to the current Geneva
    Convention, "the obvious scheme of the Agreement [is] that responsi-
    bility for observance and enforcement of these rights is upon political
    and military authorities." 
    339 U.S. at
    789 n.14.
    Even if Article 5 were somehow self-executing, there are questions
    about how it would apply to Hamdi’s case. In particular, it is anything
    but clear that the "competent tribunal" which would determine
    Hamdi’s status would be an Article III court. Every country has dif-
    32                         HAMDI v. RUMSFELD
    ferent tribunals, and there is no indication that the Geneva Convention
    was intended to impose a single adjudicatory paradigm upon its signa-
    tories. Moreover, Hamdi’s argument begs the question of what kind
    of status determination is necessary under Article 5 and how exten-
    sive it should be. Hamdi and the amici make much of the distinction
    between lawful and unlawful combatants, noting correctly that lawful
    combatants are not subject to punishment for their participation in a
    conflict. But for the purposes of this case, it is a distinction without
    a difference, since the option to detain until the cessation of hostilities
    belongs to the executive in either case. It is true that unlawful comba-
    tants are entitled to a proceeding before a military tribunal before they
    may be punished for the acts which render their belligerency unlaw-
    ful. Quirin, 
    317 U.S. at 31
    . But they are also subject to mere detention
    in precisely the same way that lawful prisoners of war are. 
    Id.
     The
    fact that Hamdi might be an unlawful combatant in no way means that
    the executive is required to inflict every consequence of that status on
    him. The Geneva Convention certainly does not require such treat-
    ment.
    For all these reasons, we hold that there is no purely legal barrier
    to Hamdi’s detention. We now turn our attention to the question of
    whether the August 16 order was proper on its own terms.
    IV.
    As we will discuss below, we conclude that Hamdi’s petition fails
    as a matter of law. It follows that the government should not be com-
    pelled to produce the materials described in the district court’s August
    16 order.
    We also note that the order, if enforced, would present formidable
    practical difficulties. The district court indicated that its production
    request might well be only an initial step in testing the factual basis
    of Hamdi’s enemy combatant status. The court plainly did not pre-
    clude making further production demands upon the government, even
    suggesting that it might "bring Hamdi before [the court] to inquire
    about [his] statements."
    Although the district court did not have "any doubts [that Hamdi]
    had a firearm" or that "he went to Afghanistan to be with the Tali-
    HAMDI v. RUMSFELD                           33
    ban," the court ordered the government to submit to the court for in
    camera, ex parte review: (1) "[c]opies of all Hamdi’s statements, and
    the notes taken from any interviews with Hamdi, that relate to his rea-
    sons for going to Afghanistan, his activities while in Afghanistan, or
    his participation in the military forces of the Taliban or any other
    organization in that country"; (2) "[a] list of all the interrogators who
    have questioned Hamdi, including their names and addresses, and the
    dates of the interviews"; (3) "[c]opies of any statements by members
    of the Northern Alliance" regarding Hamdi’s surrender; (4) "[a] list
    that includes the date of Hamdi’s capture, and that gives all the dates
    and locations of his subsequent detention"; (5) "[t]he name and title
    of the individual within the United States Government who made the
    determination that Hamdi was an illegal enemy combatant"; (6) "[t]he
    name and title of the individual within the United States Government
    who made the decision to move Hamdi from Guantanamo Bay, Cuba
    to the Norfolk Naval Station"; and (7) "the screening criteria utilized
    to determine the status of Hamdi." The court’s order allows the gov-
    ernment to redact "intelligence matters" from its responses, but only
    to the extent that those intelligence matters are outside the scope of
    inquiry into Hamdi’s legal status.
    Hamdi argues vigorously that this order should be affirmed.
    Because of the alleged "breadth with which Respondents construe
    their authority to imprison American citizens whom they consider to
    be enemy combatants," Br. of the Petitioners/Appellees at 27, Hamdi
    argues we must allow the district court to subject the government’s
    classification of him to a searching review. While the ordinary § 2241
    proceeding naturally contemplates the prospect of factual develop-
    ment, see 
    28 U.S.C. §§ 2243
    , 2246, such an observation only begs the
    basic question in this case — whether further factual exploration
    would bring an Article III court into conflict with the warmaking
    powers of Article I and II. Here, the specific interests asserted by the
    government flow directly from the warmaking powers and are inti-
    mately connected to them. Whatever the general force of these inter-
    ests (which we discussed extensively above), they are most directly
    implicated by captures in a zone of active combat operations.
    A review of the court’s August 16 order reveals the risk of "stand[-
    ing] the warmaking powers of Articles I and II on their heads," Hamdi
    II, 
    296 F.3d at 284
    . The district court, for example, ordered the gov-
    34                        HAMDI v. RUMSFELD
    ernment to produce all Hamdi’s statements and notes from interviews.
    Yet it is precisely such statements, relating to a detainee’s activities
    in Afghanistan, that may contain the most sensitive and the most valu-
    able information for our forces in the field. The risk created by this
    order is that judicial involvement would proceed, increment by incre-
    ment, into an area where the political branches have been assigned by
    law a preeminent role.
    The district court further ordered the government to produce a list
    of all interrogators who have questioned Hamdi, including their
    names and addresses and the dates of the interviews, copies of any
    statements by members of the Northern Alliance regarding Hamdi’s
    surrender, and a list that includes the date of Hamdi’s capture and all
    the dates and locations of his subsequent detention. Once again, how-
    ever, litigation cannot be the driving force in effectuating and record-
    ing wartime detentions. The military has been charged by Congress
    and the executive with winning a war, not prevailing in a possible
    court case. Complicating the matter even further is the fact that
    Hamdi was originally captured by Northern Alliance forces, with
    whom American forces were generally allied. The district court’s
    insistence that statements by Northern Alliance members be produced
    cannot help but place a strain on multilateral efforts during wartime.
    The court also expressed concern in its order that the Northern Alli-
    ance did not "identify the unit [to which Hamdi was affiliated],"
    "where or by whom [Hamdi] received weapons training or the nature
    and extent thereof," or "who commanded the unit or the type of garb
    or uniform Hamdi may have worn. . . ." In demanding such detail, the
    district court would have the United States military instruct not only
    its own personnel, but also its allies, on precise observations they
    must make and record during a battlefield capture.
    Viewed in their totality, the implications of the district court’s
    August 16 production order could not be more serious. The factual
    inquiry upon which Hamdi would lead us, if it did not entail disclo-
    sure of sensitive intelligence, might require an excavation of facts
    buried under the rubble of war. The cost of such an inquiry in terms
    of the efficiency and morale of American forces cannot be disre-
    garded. Some of those with knowledge of Hamdi’s detention may
    have been slain or injured in battle. Others might have to be diverted
    from active and ongoing military duties of their own. The logistical
    HAMDI v. RUMSFELD                           35
    effort to acquire evidence from far away battle zones might be sub-
    stantial. And these efforts would profoundly unsettle the constitu-
    tional balance.
    For the foregoing reasons, the court’s August 16 production request
    cannot stand.
    V.
    The question remains, however, whether Hamdi’s petition must be
    remanded for further proceedings or dismissed.
    Hamdi’s American citizenship has entitled him to file a petition for
    a writ of habeas corpus in a civilian court to challenge his detention,
    including the military’s determination that he is an "enemy comba-
    tant" subject to detention during the ongoing hostilities. Thus, as with
    all habeas actions, we begin by examining the precise allegations
    presented to us by the respective parties. In this case, there are two
    allegations that are crucial to our analysis. First, Hamdi’s petition
    alleges that he was a resident of and seized in Afghanistan, a country
    in which hostilities were authorized and ongoing at the time of the
    seizure, but that his continued detention in this country without the
    full panoply of constitutional protections is unlawful. Second, the
    Government’s response asserts that Hamdi is being detained pursuant
    to the Commander-in-Chief’s Article II war powers and that the cir-
    cumstances underlying Hamdi’s detention, as reflected primarily in
    the Mobbs declaration, establish that Hamdi’s detention is lawful.
    Generally speaking, in order to fulfill our responsibilities under
    Article III to review a petitioner’s allegation that he is being detained
    by American authorities in violation of the rights afforded him under
    the United States Constitution, we must first determine the source of
    the authority for the executive to detain the individual. Once the
    source of the authority is identified, we then look at the justification
    given to determine whether it constitutes a legitimate exercise of that
    authority.
    A.
    Here the government has identified the source of the authority to
    detain Hamdi as originating in Article II, Section 2 of the Constitu-
    36                        HAMDI v. RUMSFELD
    tion, wherein the President is given the war power. We have already
    emphasized that the standard of review of enemy combatant deten-
    tions must be a deferential one when the detainee was captured
    abroad in a zone of combat operations. The President "is best pre-
    pared to exercise the military judgment attending the capture of
    alleged combatants." Hamdi II, 
    296 F.3d at 283
    . Thus, in Quirin, the
    Supreme Court stated in no uncertain terms that detentions "ordered
    by the President in the declared exercise of his powers as Commander
    in Chief of the Army in time of war and of grave public danger"
    should not "be set aside by the courts without the clear conviction that
    they are in conflict with the Constitution or laws of Congress consti-
    tutionally enacted." Quirin, 
    317 U.S. at 25
    .
    This deferential posture, however, only comes into play after we
    ascertain that the challenged decision is one legitimately made pursu-
    ant to the war powers. It does not preclude us from determining in the
    first instance whether the factual assertions set forth by the govern-
    ment would, if accurate, provide a legally valid basis for Hamdi’s
    detention under that power. Otherwise, we would be deferring to a
    decision made without any inquiry into whether such deference is
    due. For these reasons, it is appropriate, upon a citizen’s presentation
    of a habeas petition alleging that he is being unlawfully detained by
    his own government, to ask that the government provide the legal
    authority upon which it relies for that detention and the basic facts
    relied upon to support a legitimate exercise of that authority. Indeed,
    in this case, the government has voluntarily submitted — and urged
    us to review — an affidavit from Michael Mobbs, Special Advisor to
    the Under Secretary of Defense for Policy, describing what the gov-
    ernment contends were the circumstances leading to Hamdi’s desig-
    nation as an enemy combatant under Article II’s war power.
    The Mobbs affidavit consists of two pages and nine paragraphs in
    which Mobbs states that he was "substantially involved with matters
    related to the detention of enemy combatants in the current war
    against the al Qaeda terrorists and those who support and harbor
    them." In the affidavit, Mobbs avers that Hamdi entered Afghanistan
    in July or August of 2001 and affiliated with a Taliban military unit.
    Hamdi received weapons training from the Taliban and remained with
    his military unit until his surrender to Northern Alliance forces in late
    2001. At the time of his capture, Hamdi was in possession of an AK-
    HAMDI v. RUMSFELD                            37
    47 rifle. After his capture, Hamdi was transferred first from Konduz,
    Afghanistan to the prison in Mazar-e-Sharif, and then to a prison in
    Sheberghan, Afghanistan where he was questioned by a United States
    interrogation team. This interrogation team determined that Hamdi
    met "the criteria for enemy combatants over whom the United States
    was taking control." Hamdi was then transported to the U.S. short
    term detention facility in Kandahar, and then transferred again to
    Guantanamo Bay and eventually to the Norfolk Naval Brig. Accord-
    ing to Mobbs, a subsequent interview with Hamdi confirmed the
    details of his capture and his status as an enemy combatant.
    The district court approached the Mobbs declaration by examining
    it line by line, faulting it for not providing information about whether
    Hamdi had ever fired a weapon, the formal title of the Taliban mili-
    tary unit Hamdi was with when he surrendered, the exact composition
    of the U.S. interrogation team that interviewed Hamdi in Sheberghan,
    and even the distinguishing characteristics between a Northern Alli-
    ance miliary unit and a Taliban military unit. Concluding that the fac-
    tual allegations were insufficient to support the government’s
    assertion of the power to detain Hamdi under the war power, the court
    then ordered the production of the numerous additional materials out-
    lined previously. We think this inquiry went far beyond the accept-
    able scope of review.
    To be sure, a capable attorney could challenge the hearsay nature
    of the Mobbs declaration and probe each and every paragraph for
    incompleteness or inconsistency, as the district court attempted to do.
    The court’s approach, however, had a signal flaw. We are not here
    dealing with a defendant who has been indicted on criminal charges
    in the exercise of the executive’s law enforcement powers. We are
    dealing with the executive’s assertion of its power to detain under the
    war powers of Article II. See Eisentrager, 
    339 U.S. at 793
     (Black, J.,
    dissenting) ("[I]t is no ‘crime’ to be a soldier."); cf. In re Winship, 
    397 U.S. 358
    , 363 (1970) (explaining that elevated burden of proof
    applies in criminal cases because of consequences of conviction,
    including social stigma). To transfer the instinctive skepticism, so
    laudable in the defense of criminal charges, to the review of executive
    branch decisions premised on military determinations made in the
    field carries the inordinate risk of a constitutionally problematic intru-
    sion into the most basic responsibilities of a coordinate branch.
    38                        HAMDI v. RUMSFELD
    The murkiness and chaos that attend armed conflict mean military
    actions are hardly immune to mistake. Yet these characteristics of
    warfare have been with us through the centuries and have never been
    thought sufficient to justify active judicial supervision of combat
    operations overseas. To inquire, for example, whether Hamdi actually
    fired his weapon is to demand a clarity from battle that often is not
    there. The district court, after reviewing the Mobbs affidavit, did not
    "have any doubts [Hamdi] had a firearm [or] any doubts he went to
    Afghanistan to be with the Taliban." To delve further into Hamdi’s
    status and capture would require us to step so far out of our role as
    judges that we would abandon the distinctive deference that animates
    this area of law.
    For these reasons, and because Hamdi was indisputably seized in
    an active combat zone abroad, we will not require the government to
    fill what the district court regarded as gaps in the Mobbs affidavit.
    The factual averments in the affidavit, if accurate, are sufficient to
    confirm that Hamdi’s detention conforms with a legitimate exercise
    of the war powers given the executive by Article II, Section 2 of the
    Constitution and, as discussed elsewhere, that it is consistent with the
    Constitution and laws of Congress. See Quirin, 
    317 U.S. at 25
    . Ask-
    ing the executive to provide more detailed factual assertions would be
    to wade further into the conduct of war than we consider appropriate
    and is unnecessary to a meaningful judicial review of this question.
    B.
    We turn then to the question of whether, because he is an American
    citizen currently detained on American soil by the military, Hamdi
    can be heard in an Article III court to rebut the factual assertions that
    were submitted to support the "enemy combatant" designation. We
    hold that no evidentiary hearing or factual inquiry on our part is nec-
    essary or proper, because it is undisputed that Hamdi was captured in
    a zone of active combat operations in a foreign country and because
    any inquiry must be circumscribed to avoid encroachment into the
    military affairs entrusted to the executive branch.
    In support of its contention that no further factual inquiry is appro-
    priate, the government has argued that a "some evidence" standard
    should govern the adjudication of claims brought by habeas petition-
    HAMDI v. RUMSFELD                           39
    ers in areas where the executive has primary responsibility. That stan-
    dard has indeed been employed in contexts less constitutionally
    sensitive than the present one, albeit in a procedural posture that ren-
    ders those cases distinguishable. See, e.g., INS v. St. Cyr, 
    533 U.S. 289
    , 306 (2001) (describing historical practice under which, so long
    as "there was some evidence to support" a deportation order, habeas
    courts would not "review factual determinations made by the Execu-
    tive"); Eagles v. Samuels, 
    329 U.S. 304
    , 312 (1946); Fernandez v.
    Phillips, 
    268 U.S. 311
    , 312 (1925). In each of these cases, the Court
    indicated that the role of the writ is not to correct "mere error" in the
    executive’s exercise of a discretionary power, but rather to check the
    executive branch if it asserts a "power to act beyond the authority
    granted." Eagles, 
    329 U.S. at 311-12
    . Thus, the government asserts,
    the role of a habeas court is not to reconsider the executive’s decision,
    but rather only to confirm that "there was some basis for the chal-
    lenged executive determination." Br. for Respondents-Appellants at
    29. Once that determination is made, the government further asserts,
    the detainee may not offer any rebuttal evidence and no further fac-
    tual inquiry is allowed.
    It is not necessary for us to decide whether the "some evidence"
    standard is the correct one to be applied in this case because we are
    persuaded for other reasons that a factual inquiry into the circum-
    stances of Hamdi’s capture would be inappropriate.
    1.
    As we have emphasized throughout these appeals, we cannot set
    aside executive decisions to detain enemy combatants "without the
    clear conviction that they are in conflict with the Constitution or laws
    of Congress constitutionally enacted." Quirin, 
    317 U.S. at 25
    . We
    cannot stress too often the constitutional implications presented on the
    face of Hamdi’s petition. The constitutional allocation of war powers
    affords the President extraordinarily broad authority as Commander
    in Chief and compels courts to assume a deferential posture in
    reviewing exercises of this authority. And, while the Constitution
    assigns courts the duty generally to review executive detentions that
    are alleged to be illegal, the Constitution does not specifically con-
    template any role for courts in the conduct of war, or in foreign policy
    generally.
    40                         HAMDI v. RUMSFELD
    Indeed, Article III courts are ill-positioned to police the military’s
    distinction between those in the arena of combat who should be
    detained and those who should not. Any evaluation of the accuracy
    of the executive branch’s determination that a person is an enemy
    combatant, for example, would require courts to consider, first, what
    activities the detainee was engaged in during the period leading up to
    his seizure and, second, whether those activities rendered him a com-
    batant or not. The first question is factual and, were we called upon
    to delve into it, would likely entail substantial efforts to acquire evi-
    dence from distant battle zones. See Eisentrager, 
    339 U.S. at 779
    . The
    second question may require fine judgments about whether a particu-
    lar activity is linked to the war efforts of a hostile power — judg-
    ments the executive branch is most competent to make.
    Hamdi’s petition places him squarely within the zone of active
    combat and assures that he is indeed being held in accordance with
    the Constitution and Congressional authorization for use of military
    force in the wake of al Qaida’s attack. Quirin, 
    317 U.S. at 25
    . Any
    effort to ascertain the facts concerning the petitioner’s conduct while
    amongst the nation’s enemies would entail an unacceptable risk of
    obstructing war efforts authorized by Congress and undertaken by the
    executive branch.
    2.
    Hamdi contends that, although international law and the laws of
    this country might generally allow for the detention of an individual
    captured on the battlefield, these laws must vary in his case because
    he is an American citizen now detained on American soil. As an
    American citizen, Hamdi would be entitled to the due process protec-
    tions normally found in the criminal justice system, including the
    right to meet with counsel, if he had been charged with a crime. But
    as we have previously pointed out, Hamdi has not been charged with
    any crime. He is being held as an enemy combatant pursuant to the
    well-established laws and customs of war. Hamdi’s citizenship right-
    fully entitles him to file this petition to challenge his detention, but
    the fact that he is a citizen does not affect the legality of his detention
    as an enemy combatant.
    Indeed, this same issue arose in Quirin. In that case, petitioners
    were German agents who, after the declaration of war between the
    HAMDI v. RUMSFELD                           41
    United States and the German Reich, were trained at a German sabo-
    tage school where they "were instructed in the use of explosives and
    in methods of secret writing." Quirin, 
    317 U.S. at 21
    . The petitioners
    then journeyed by submarine to the beaches of New York and Florida,
    carrying large quantities of explosives and other sabotage devices. All
    of them were apprehended by FBI agents, who subsequently learned
    of their mission to destroy war industries and facilities in the United
    States. All of the petitioners were born in Germany but had lived in
    the United States at some point. One petitioner claimed American cit-
    izenship by virtue of the naturalization of his parents during his youth.
    The Court, however, did not need to determine his citizenship because
    it held that the due process guarantees of the Fifth and Sixth Amend-
    ments were inapplicable in any event. It noted that "[c]itizenship in
    the United States of an enemy belligerent does not relieve him from
    the consequences of a belligerency which is unlawful." 
    Id. at 37
    . The
    petitioner who alleged American citizenship was treated identically to
    the other German saboteurs.
    The Quirin principle applies here. One who takes up arms against
    the United States in a foreign theater of war, regardless of his citizen-
    ship, may properly be designated an enemy combatant and treated as
    such. The privilege of citizenship entitles Hamdi to a limited judicial
    inquiry into his detention, but only to determine its legality under the
    war powers of the political branches. At least where it is undisputed
    that he was present in a zone of active combat operations, we are sat-
    isfied that the Constitution does not entitle him to a searching review
    of the factual determinations underlying his seizure there.
    3.
    Similarly, we reject Hamdi’s argument that even if his initial deten-
    tion in Afghanistan was lawful, his continuing detention on American
    soil is not. Specifically, Hamdi contends that his petition does not
    implicate military concerns because "the underlying claims in this
    case are designed to test the legality of Hamdi’s imprisonment in a
    naval brig in Norfolk, Virginia, not a military determination made
    overseas on the basis of caution rather than accuracy." Br. of the Peti-
    tioners/Appellees at 44. But the fact that Hamdi is presently being
    detained in the United States — as opposed to somewhere overseas
    — does not affect the legal implications of his status as an enemy
    42                         HAMDI v. RUMSFELD
    combatant. For the same reason that courts are ill-positioned to
    review the military’s distinction between those who should or should
    not be detained in an arena of combat, courts are not in the position
    to overturn the military’s decision to detain those persons in one loca-
    tion or another. It is not clear why the United States should be pre-
    cluded from exercising its discretion to move a detainee to a site
    within this country, nor do we see what purpose would be served by
    second guessing the military’s decision with respect to the locus of
    detention.
    4.
    To conclude, we hold that, despite his status as an American citizen
    currently detained on American soil, Hamdi is not entitled to chal-
    lenge the facts presented in the Mobbs declaration. Where, as here,
    a habeas petitioner has been designated an enemy combatant and it is
    undisputed that he was captured in a zone of active combat operations
    abroad, further judicial inquiry is unwarranted when the government
    has responded to the petition by setting forth factual assertions which
    would establish a legally valid basis for the petitioner’s detention.
    Because these circumstances are present here, Hamdi is not entitled
    to habeas relief on this basis.
    C.
    Finally, we address Hamdi’s contention that even if his detention
    was at one time lawful, it is no longer so because the relevant hostili-
    ties have reached an end. In his brief, Hamdi alleges that the govern-
    ment "confuses the international armed conflict that allegedly
    authorized Hamdi’s detention in the first place with an on-going fight
    against individuals whom Respondents refuse to recognize as ‘bellig-
    erents’ under international law." 
    Id. at 53-54
    . Whether the timing of
    a cessation of hostilities is justiciable is far from clear. See Ludecke,
    
    335 U.S. at 169
     ("Whether and when it would be open to this Court
    to find that a war though merely formally kept alive had in fact ended,
    is a question too fraught with gravity even to be adequately formu-
    lated when not compelled."). The executive branch is also in the best
    position to appraise the status of a conflict, and the cessation of hostil-
    ities would seem no less a matter of political competence than the ini-
    tiation of them. See United States v. The Three Friends, 
    166 U.S. 1
    ,
    HAMDI v. RUMSFELD                           43
    63 (1897) ("[I]t belongs to the political department to determine when
    belligerency shall be recognized, and its action must be accepted
    according to the terms and intention expressed."). In any case, we
    need not reach this issue here. The government notes that American
    troops are still on the ground in Afghanistan, dismantling the terrorist
    infrastructure in the very country where Hamdi was captured and
    engaging in reconstruction efforts which may prove dangerous in
    their own right. Because under the most circumscribed definition of
    conflict hostilities have not yet reached their end, this argument is
    without merit.
    VI.
    It is important to emphasize that we are not placing our imprimatur
    upon a new day of executive detentions. We earlier rejected the sum-
    mary embrace of "a sweeping proposition — namely that, with no
    meaningful judicial review, any American citizen alleged to be an
    enemy combatant could be detained indefinitely without charges or
    counsel on the government’s say-so." Hamdi II, 
    296 F.3d at 283
    . But,
    Hamdi is not "any American citizen alleged to be an enemy comba-
    tant" by the government; he is an American citizen captured and
    detained by American allied forces in a foreign theater of war during
    active hostilities and determined by the United States military to have
    been indeed allied with enemy forces.
    Cases such as Hamdi’s raise serious questions which the courts will
    continue to treat as such. The nation has fought since its founding for
    liberty without which security rings hollow and for security without
    which liberty cannot thrive. The judiciary was meant to respect the
    delicacy of the balance, and we have endeavored to do so.
    The events of September 11 have left their indelible mark. It is not
    wrong even in the dry annals of judicial opinion to mourn those who
    lost their lives that terrible day. Yet we speak in the end not from sor-
    row or anger, but from the conviction that separation of powers takes
    on special significance when the nation itself comes under attack.
    Hamdi’s status as a citizen, as important as that is, cannot displace our
    constitutional order or the place of the courts within the Framer’s
    scheme. Judicial review does not disappear during wartime, but the
    review of battlefield captures in overseas conflicts is a highly deferen-
    44                    HAMDI v. RUMSFELD
    tial one. That is why, for reasons stated, the judgment must be
    reversed and the petition dismissed. It is so ordered.