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Mark P. Denbeaux (born July 30, 1943, in
Gainesville, Florida Gainesville is the county seat of Alachua County, Florida, United States, and the most populous city in North Central Florida, with a population of 145,212 in 2022. It is the principal city of the Gainesville metropolitan area, Florida, Gainesv ...
) is an American attorney, professor, and author. He is a law professor at Seton Hall University School of Law in
Newark, New Jersey Newark ( , ) is the List of municipalities in New Jersey, most populous City (New Jersey), city in the U.S. state of New Jersey, the county seat of Essex County, New Jersey, Essex County, and a principal city of the New York metropolitan area. ...
and the Director of its Center for Policy and Research. He is best known for his reports on the Guantanamo Bay detention camp and its operations. Denbeaux has testified to Congress about the findings of the center's reports. He and his son, Joshua Denbeaux, are the legal representatives of two Tunisian detainees at Guantanamo. He is also the lead Civilian Military Commission Counsel for two detainees who were tortured by the
Central Intelligence Agency The Central Intelligence Agency (CIA; ) is a civilian foreign intelligence service of the federal government of the United States tasked with advancing national security through collecting and analyzing intelligence from around the world and ...
in black sites prior to their detainment. Denbeaux is an expert in forensics and has testified as an expert witness in cases across the country. Denbeaux also is a practicing attorney in the family law firm of Denbeaux & Denbeaux in Westwood, New Jersey.


Early life and education

Mark Denbeaux was born on July 30, 1943, in
Gainesville, Florida Gainesville is the county seat of Alachua County, Florida, United States, and the most populous city in North Central Florida, with a population of 145,212 in 2022. It is the principal city of the Gainesville metropolitan area, Florida, Gainesv ...
. He attended local schools before going to the
Commonwealth School Commonwealth School, often referred to simply as Commonwealth, is a private, co-educational high school of about 150 students and 35 faculty members located in the downtown Back Bay neighborhood of Boston, Massachusetts, United States. It is acc ...
. Denbeaux received his B.A. from
College of Wooster {{Infobox university , image = College of Wooster seal.png , image_upright = .6 , name = The College of Wooster , former_names = University of Wooster (1866–1915) , motto ...
in 1965. An active supporter of civil rights in the 1960s, Denbeaux participated in the
March on Washington The March on Washington for Jobs and Freedom (commonly known as the March on Washington or the Great March on Washington) was held in Washington, D.C., on August 28, 1963. The purpose of the march was to advocate for the civil and economic rig ...
on August 28, 1963. Denbeaux later founded an
NAACP The National Association for the Advancement of Colored People (NAACP) is an American civil rights organization formed in 1909 as an interracial endeavor to advance justice for African Americans by a group including W. E. B. Du&nbs ...
chapter in Wooster. The Wooster NAACP eventually became the Wooster Orville NAACP because it was too large to be run by students. He was later honored and asked to speak at the 50th anniversary Freedom Dinner in 2015. He participated in the
Selma to Montgomery marches The Selma to Montgomery marches were three Demonstration (protest), protest marches, held in 1965, along the highway from Selma, Alabama, to the state capital of Montgomery, Alabama, Montgomery. The marches were organized by Nonviolence, nonvi ...
for voting rights in 1965.Di Ionno, mark
"The Selma march and the fascinating story behind an iconic photo"
''
The Star-Ledger ''The Star-Ledger'' was the largest circulation newspaper in New Jersey. It is based in Newark, New Jersey. The newspaper ceased print publication on February 2, 2025, but continues to publish a digital edition. In 2007, ''The Star-Ledger''s ...
'', March 4, 2015. Accessed November 23, 2017. "The historic photo is a little grainy, produced in black-and-white. That was not by choice, as some artistic metaphor; color photography in 1965 was expensive to print. The picture was part of Ebony magazine's coverage of the third Alabama voting rights march from Selma to Montgomery, which began on March 21, 1965.... 'My father was a combat chaplain with (Gen. George) Patton's 3rd Army,' Denbeaux said during an interview at his home in Woodcliff Lake."
He attended
New York University School of Law The New York University School of Law (NYU Law) is the law school of New York University, a private research university in New York City. Established in 1835, it was the first law school established in New York City and is the oldest survivin ...
, where he received his J.D. in 1968.


Career


Early career

After graduating from NYU Law School in 1968, Denbeaux became a founding member of the South Bronx Legal Services. He served as the citywide coordinator for the Community Action for Legal Services, New York's organization of antipoverty lawyers, from 1970 to 1972. During this time he also filed complaints against judges for hostility towards poor people. During the 1970s and early 1980s, Denbeaux represented
Black Panther Party The Black Panther Party (originally the Black Panther Party for Self-Defense) was a Marxism–Leninism, Marxist–Leninist and Black Power movement, black power political organization founded by college students Bobby Seale and Huey P. Newto ...
in
The Bronx The Bronx ( ) is the northernmost of the five Boroughs of New York City, boroughs of New York City, coextensive with Bronx County, in the U.S. state of New York (state), New York. It shares a land border with Westchester County, New York, West ...
and Manhattan with Jeffrey Brand, now the Dean of the
University of San Francisco School of Law The University of San Francisco School of Law (USF Law) is the law school of the private University of San Francisco. Established in 1912, it received American Bar Association accreditation in 1935 and joined the Association of American La ...
. He represented the Young Lords in the Bronx during their takeover of Lincoln Hospital. In the early 1970s, Denbeaux represented a number of U.S. soldiers charged with disobeying orders during the
Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
and the
anti-war An anti-war movement is a social movement in opposition to one or more nations' decision to start or carry on an armed conflict. The term ''anti-war'' can also refer to pacifism, which is the opposition to all use of military force during conf ...
movement. He defended some in courts martial.


Seton Hall University School of Law

In 1972, Denbeaux joined the Seton Hall Law School Faculty. He has taught courses including Evidence, Remedies, Uniform Commercial Code, Contracts, Professional Responsibility, Federal Civil Procedure, Torts, and Constitutional Law. He has been an elected member of the
American Law Institute The American Law Institute (ALI) is a research and advocacy group of judges, lawyers, and legal scholars limited to 3,000 elected members and established in 1923 to promote the clarification and simplification of United States common law and i ...
since 1980. In 2006, Denbeaux founded the Center for Policy and Research at Seton Hall University Law School. This work was originally inspired by Denbeaux's ''
pro bono ( English: 'for the public good'), usually shortened to , is a Latin phrase for professional work undertaken voluntarily and without payment. The term traditionally referred to provision of legal services by legal professionals for people who a ...
'' representation of two Guantanamo detainees. He and his son are among more than 100 attorneys who have represented detainees there. The Center produces analytic reports in three key areas: interrogations and intelligence, national security, and forensics. Under Denbeaux's supervision, students working as research fellows in teams develop skills in pattern recognition, factual evaluation, and data analysis; Seton Hall University has published their original reports on issues concerning law and public policy. Denbeaux is well known for the center's Guantanamo Reports, studies of United States operations and policies at the
Guantanamo Bay detention camp The Guantanamo Bay detention camp, also known as GTMO ( ), GITMO ( ), or simply Guantanamo Bay, is a United States military prison within Naval Station Guantanamo Bay (NSGB), on the coast of Guantánamo Bay, Cuba. It was established in 2002 by p ...
; by late 2009, fifteen studies had been published in this series. The law research fellows have systematically analyzed data published by the Department of Defense; they have reviewed more than 100,000 pages of government documents procured through the
Freedom of Information Act Freedom of Information Act may refer to the following legislations in different jurisdictions which mandate the national government to disclose certain data to the general public upon request: * Freedom of Information Act (United States) of 1966 * F ...
. The first report was a statistical analysis of characteristics of the 517 detainees held in 2005. The Guantanamo Reports have been widely cited and published globally.


Guantanamo Bay

In 2005, Denbeaux began representing two Tunisian detainees, Rafiq Bin Bashir Bin Jalud Al Hami and Lufti Bin Ali. In 2009, al Hami was released to Slovakia. In 2011, bin Ali was released to Kazakhstan. In 2009, he began his pro bono representation of two more detainees,
Abu Zubaydah Abu Zubaydah ( ; , ''Abū Zubaydah''; born March 12, 1971, as Zayn al-Abidin Muhammad Husayn) is a Saudi citizen and alleged terrorist born in Saudi Arabia currently held by the U.S. in the Guantanamo Bay detention camp in Cuba. He is held unde ...
and Mohamad Farik Amin. Denbeaux represented them in their habeas corpus petitions and remains the lead civilian defense counsel for both detainees. He has testified before the Senate Armed Services Committee and the Senate Judiciary Committee, as well as a variety of House and Senate subcommittees, regarding Guantanamo Bay and national security issues.


Forensics

Denbeaux is an expert in forensic testimony. He teaches an upper-level seminar at Seton Hall Law on forensic evidence. The course evaluates the reliability of experts who testify as to handwriting identification, fingerprint identification, ballistics, tool marks, blood spatter, bite marks, and other crime scene forensic evidence and witnesses. The analysis of these areas includes an evaluation of the reliability and validity of each area's conclusions, the value of each area's proficiency testing, and the methodology upon which the conclusions are reached. In order to fully evaluate forensic evidence, the center has established a crime laboratory, certified by the requisite proficiency tests. Its representatives have given expert opinions about the methodology used by specific forensic fields in court. Its written reports have been used in court proceedings. A significant part of the seminar includes participating in these projects. Denbeaux has spoken on the subject of forensic science at dozens of academic gatherings and has testified as an expert witness on the limitations of forensic evidence more than fifty times in state and federal courts as well as in administrative proceedings. His testimony has been cited in published cases in addition to the Third and Eleventh Circuits (''U.S. v. Yagman'' and ''U.S. v. Pettus''). ;''U.S. v. Yagman'' Denbeaux offered testimony questioning the reliability of handwriting analysis in this 2007 trial. His testimony was limited to his observations about the limitations and/or flaws in handwriting analysis generally, not as specifically applicable to the facts in ''Yagman''. ;U.S. v. Hines Denbeaux served as an expert witness in ''U.S. v. Hines'', in which the government's motion to exclude Denbeaux's testimony was deemed moot. The government argued that Denbeaux's testimony did not meet the standards of ''Daubert'' and ''Kumho'', while Denbeaux concluded that there is no need for expert testimony on handwriting analysis as it has never been proven reliable. ;U.S. v. Ruth In ''U.S. v. Ruth'', the issue in question was whether the military judge abused his discretion by denying production of Denbeaux, who was slated to testify as an expert critic of handwriting analysis.


High-profile cases

Denbeaux defended Sydney Biddle Barrows, the " Mayflower Madam," in 1984. Barrows ran Cachet, an escort service in New York City, from 1979 until 1984, when the service was shut down. She was charged with promoting
prostitution Prostitution is a type of sex work that involves engaging in sexual activity in exchange for payment. The definition of "sexual activity" varies, and is often defined as an activity requiring physical contact (e.g., sexual intercourse, no ...
by the Manhattan District Attorney's Office. She eventually pleaded guilty. In 1997, Denbeaux served as a forensic expert for the trial of
Timothy McVeigh Timothy James McVeigh (April 23, 1968 – June 11, 2001) was an American domestic terrorist who masterminded and perpetrated the Oklahoma City bombing on April 19, 1995. The bombing itself killed 167 people (including 19 children), injured ...
, charged with bombing the Oklahoma Federal Building.


Private practice

Denbeaux serves as Attorney of Counsel for the family law firm Denbeaux and Denbeaux.


Personal life

The son of a combat chaplain who served with the
Third United States Army Third or 3rd may refer to: Numbers * 3rd, the ordinal form of the cardinal number 3 * , a fraction of one third * 1⁄60 of a ''second'', i.e., the third in a series of fractional parts in a sexagesimal number system Places * 3rd Street (di ...
during
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
. Denbeaux has been a resident of
Woodcliff Lake, New Jersey Woodcliff Lake is a borough in Bergen County, in the U.S. state of New Jersey. As of the 2020 United States census, the borough's population was 6,128, an increase of 398 (+6.9%) from the 2010 census count of 5,730, which in turn reflected a d ...
.


Publications


Books

*''Trial Evidence'', (I.C.L.E.), (with Michael Risinger), 1978 *''New Jersey Evidentiary Foundations'', Denbeaux, Arseneault and Imwinkelried, The Michie Company, 1995. *''The Guantánamo Lawyers: Inside a Prison, Outside the Law,'' edited with Jonathan Hafetz, 2010Richard Bernstein, Letter from America: "Guantánamo Lawyers Showed Their Moral Fiber"
''New York Times'', 8 October 2010, accessed 10 February 2013


Center for Policy and Research, Guantanamo Reports


''Report on Guantanamo Detainees: A Profile of 517 Detainees through Analysis of Department of Defense Data''
February 8, 2006 (with Joshua Denbeaux, David Gratz, John Gregorek, Matthew Darby, Shana Edwards, Shane Hartman, Daniel Mann, and Helen Skinner).
''Second Report on the Guantanamo Detainees: Inter- and Intra-Departmental Disagreements About Who Is Our Enemy''
March 20, 2006 (with Joshua Denbeaux, David Gratz, John Gregorek, Matthew Darby, Shana Edwards, Shane Hartman, Daniel Mann, and Helen Skinner).
''The Guantanamo Detainees During Detention: Data From Department of Defense Records''
July 10, 2006 (with Joshua Denbeaux, David Gratz, John Gregorek, Matthew Darby, Shana Edwards, Shane Hartman, Daniel Mann, Megan Sassaman, and Helen Skinner). *
June 10 Suicides at Guantanamo
'' August 21, 2006 (with Joshua Denbeaux, David Gratz, John Gregorek, Matthew Darby, Shana Edwards, Shane Hartman, Daniel Mann, Megan Sassaman, and Helen Skinner).
''No-Hearing Hearings CSRT: The Modern Habeas Corpus? An Analysis of the Proceeding of the Government's Combatant Status Review Tribunals at Guantanamo''
November 17, 2006 (with Joshua Denbeaux, David Gratz, John Gregorek, Matthew Darby, Shana Edwards, Shane Hartman, Daniel Mann, Megan Sassaman, and Helen Skinner).
''The Meaning of "Battlefield": An Analysis of the Government’s Representations of "Battlefield Capture" and "Recidivism" of the Guantánamo Detainees''
December 10, 2007 (with Joshua Denbeaux, Grace Brown, Jillian Camarote, Douglas Eadie, Jennifer Ellick, Daniel Lorenzo, Mark Muoio, Courtney Ray, and Nebroisa Zlatanovic).
''Captured on Tape: Interrogation and Videotaping of Detainees in Guantánamo''
February 7, 2008 (with Joshua Denbeaux, Jennifer Ellick, Michael Ricciardelli, Matthew Darby).
''Justice Scalia, the Department of Defense, and the Perpetuation of an Urban Legend: The Truth About the Alleged Recidivism of Released Guantánamo Detainees''
June 16, 2008 (with Joshua Denbeaux, Daniel Lorenzo, Mark Muoio, Grace Brown, Jennifer Ellick, Jillian Camarote, Douglas Eadie, and Paul Taylor).
''Released Guantánamo Detainees and the Department of Defense: Propaganda by the Numbers?''
, January 15, 2009 (with Joshua Denbeaux, R. David Gratz, Daniel Lorenzo, Mark Muoio, Grace Brown, Jullian Camarote, Douglas Eadie, Jennifer Ellick, Paul Taylor, Adam Deutsch, Michael Patterson, Gabrielle Hughes, and Michelle Fish).
''Profile of Released Guantánamo Detainees: The Government's Story Then and Now''
August 4, 2008 (with Joshua Denbeaux, Adam Deutsch, James Hlavenka, Gabrielle Hughes, Brianna Kostecka, Michael Patterson, Paul Taylor, and Anthony Torntore).
''Torture: Who Knew? An Analysis of the FBI and Department of Defense Reactions to Harsh Interrogation Methods at Guantanamo''
, April 1, 2009 (with Joshua Denbeaux, David Gratz, Megan Sassaman, Daniel Mann, Mathew Darby, Michael Ricciardelli, Jennifer Ellick, Grace Brown, Jillian Camarote, Douglas Eadie, Daniel Lorenzo, Mark Muoio, and Courtney Ray).
''Revisionist Recidivism: A New Analysis of the Government's Representations of Alleged "Recidivism" of the Guantánamo Detainees''
June 5, 2009 (with Joshua Denbeaux, David Gratz, Sean Camoni, Adam Deutsch, Michael McDonough, Michael Patterson, Michelle Fish, Gabrielle Hughes, Paul Taylor, Brian Beroth, Scott Buerkle, Megan Chrisner, Jesse Dresser, Shannon Sterritt, and Kelli Stout).
''Death in Camp Delta''
December 7, 2009 (with Brian Beroth, Scott Buerkle, Sean Camoni, Meghan Chrisner, Adam Deutsch, Jesse Dresser, Doug Eadie, Michelle Fish, Marissa Litwin, Michael McDonough, Michael Patterson, Shannon Sterrit, Kelli Stout, and Paul Taylor).
''DOD Contradicts DOD: An Analysis of the Response to Death in Camp Delta''
, February 3, 2010 (with Brian Beroth, Scott Buerkle, Sean Camoni, Meghan Chrisner, Adam Deutsch, Jesse Dresser, Michelle Fish, Marissa Litwin, Michael McDonough, Michael Patterson, Shannon Sterritt, Kelli Stout, and Paul Taylor).
''Guantanamo: America's Battle Lab''
January 12, 2015 (with Jonathan Hafetz, Joshua Denbeaux, Erin Hendrix, Chelsea Perdue, Kelly Ross, Lauren Winchester, and Joseph Hickman).
''Drug Abuse: An Exploration of the Government's Use of Mefloquine at Guantanamo''
February 12, 2011 (with Sean Camoni, Brian Beroth, Meghan Chrisner, Chrystal Loyer, Kelli Stout, and Paul Taylor).
''Rumsfeld Knew: DoD's "Worst of the Worst" and Recidivism Claims Refuted by Recently Declassified Memo''
, March 3, 2011 (with Sean Camoni, Paul Taylor, and Philip Taylor).
''The Guantanamo Diet: Actual Facts About Detainee Weight Changes''
, May 24, 2011 (with Paul Taylor, Sean Kennedy, Sean CAmoni, Kelly Ann Taddonio, Meghan Chrisner, Brian Beroth, Kelli Stout, Chrystal Loyer, Nick Stratton, Lauren Winchester, and Phillip Taylor).


Center for Policy and Research, Other Reports


''Global War on Terror Timeline: September 11, 2001 to January 20, 2009''
January 5, 2017 (with Brian Beroth, Adam Deutsch, Nicholas Stratton, and Phillip Taylor).
''Racial Profiling report: Bloomfield Police and Bloomfield Municipal Court''
April 7, 2016 (with Kelley Kearns and Michael J. Ricciardelli). *''The Government's Hostage: The Conviction and Execution of Ethel Rosenberg'', December 15, 2016 (with Shannon Dolan, Robert Graber, Elizabeth Mancuso, and Theodore Tanzer). * ''Costs and Consequences of Arming America's Law Enforcement with Combat Equipment'', September 7, 2014 (with Jeremy Dack, Dakota Gallivan, Lucas Morgan, Jared Stepp, and Joshua Wirtshafter). *''Lehman Brothers: A License to Fail with Other People's Money'', September 7, 2012 (with Edward Dabek, John Gregorek, Sean A. Kennedy, and Eric Miller).


Articles

*"Trust, Cynicism, and Machiavellianism Among First Year Law Students, 53 ''Journal of Urban Law'' 397" (1976). *"Restitution and Mass Actions: A Solution to the Problems of Class Actions," 10 ''Seton Hall L. Rev.'' 273 (1979). *"Questioning Questions: Problems of Form in the Interrogation of Witness," 33 ''Arkansas L. Rev. 439'' (1980) (with Risinger). *"The First Word of the First Amendment," ''Northwestern University L. Rev.'' (1988). *"Exorcism of Ignorance as a Proxy for Rational Knowledge: The Lessons of Handwriting Identification 'Expertise'," ''U. of Pa. L. Rev.'' (1989) (with Risinger & Saks). *"Brave New 'Post- Daubert World'--A Reply to Professor Moenssens," 29 ''Seton Hall L. Rev.'' 405 (1998) (with Risinger and Saks).


Book review

*"Resignation in Protest: Political and Ethical Choices Between Loyalty to Team and Loyalty to Conscience in American Public Life," 4 ''Hofstra L. Rev.'' (1976).


Sponsored research

*American Bar Foundation, 1974–78. Recipient of a grant, with Professor Alan Katz of Fairfield University, Fairfield, Connecticut, to conduct a longitudinal study on law student attitudes toward politics, law and legal education *"Alteration or Elaboration: Does Law School Instill Cynicism?," (with Alan Katz), National Conferences on Teaching Professional Responsibility, Detroit, Michigan, Sept. 1977


References


External links


Law School Faculty Profile for Mark Denbeaux on Martindale.com
Seton Hall University Law School
Curriculum vitae: Mark P. Denbeaux
{{DEFAULTSORT:Denbeaux, Mark 1943 births Living people People from Gainesville, Florida People from Woodcliff Lake, New Jersey Guantanamo Bay attorneys American legal scholars American lawyers New York University School of Law alumni Seton Hall University School of Law faculty College of Wooster alumni Commonwealth School alumni