TheSpeech or Debate Clause is a clause in theUnited States Constitution (Article I, Section 6, Clause 1). The clause states that "The Senators and Representatives" ofCongress "shall in all Cases, exceptTreason,Felony, andBreach of the Peace, be privileged fromArrest during their attendance at the Session of their Respective Houses, and in going to and from the same; and for any Speech or Debate in either House, they shall not be questioned in any other Place."

The intended purpose is to prevent aU.S. President or other officials of theexecutive branch from having members arrested on a pretext to prevent them from voting a certain way or otherwise taking actions with which the president might disagree. It also protects members from civil suits related to their official duties.^[1]

A similar clause in manystate constitutions protects members ofstate legislatures. Legislators elsewhere in the world are often similarly protected under the doctrine ofparliamentary immunity.

OnJune 15, 1971,SenatorMike Gravel (D-Alaska) received a copy of thePentagon Papers fromBen Bagdikian, an editor atThe Washington Post.^[2] Over the next several days, Gravel (who wasdyslexic) was assisted by his congressional office staff in reading and analyzing the report.^[2] Worried his home might be raided by theFederal Bureau of Investigation, Gravel smuggled the report, which filled two large suitcases, into his Senate office, which was being guarded by disabled Vietnam veterans.^[2]

On the evening ofJune 29, 1971, Gravel attempted to read the Pentagon Papers into theCongressional Record.^[3] A lack of aquorum, however, prevented the Senate from convening.^[2][3] As chair of the Senate Subcommittee on Public Buildings and Grounds, Gravel convened a meeting of the subcommittee and spent an hour reading part of the Pentagon Papers into the record.^[2] Prevented by his dyslexia from continuing, Gravel had the remainder of the Pentagon Papers entered into the record.^[2][3]

Gravel arranged to have the Pentagon Papers published by a private publisher,Beacon Press, anonprofit bookpublisher owned by theUnitarian Universalist Association.^[3]

A federalgrand jury was empaneled to investigate possible violations of federal law in the release of the report. Leonard Rodberg, a Gravel aide, wassubpoenaed to testify about his role in obtaining and arranging for publication of the Pentagon Papers. Senator Gravelintervened and asked a court toquash the subpoena, contending that forcing Rodberg to testify would violate the Speech or Debate Clause.^[4] A federaldistrict court refused to grant the motion to quash but did agree to proscribe certain questions.^[5] The trial court also held that publication of the Pentagon Papers by a private press was not protected by the Speech or Debate Clause.^[5] TheCourt of Appeals affirmed the district court's ruling, although it modified the categories of barred questions.^[6] The United States appealed the barring of questions, and Senator Gravel appealed the ruling regarding publication. TheUnited States Supreme Court grantedcertiorari.^[7]

InGravel v. United States,408 U.S. 606 (1972), the Supreme Court held (5–4) that the privileges of the Speech or Debate Clause extend to Congressional aides. Rejecting the reasoning of the Court of Appeals, the Supreme Court held, "the privilege available to the aide is confined to those services that would be immune legislative conduct if performed by the Senator himself".^[8]

The Court refused to protect congressional aides either from prosecution for criminal conduct or from testifying at trials or grand jury proceedings involving third-party crimes.^[9] The Supreme Court also vacated the lower court's order permitting some questions and barring others, concluding that if the testimony is privileged then theprivilege is absolute.^[10]

The Supreme Court upheld the district court ruling regarding private publication. "[Private] publication by Senator Gravel through the cooperation of Beacon Press was in no way essential to the deliberations of the Senate; nor does questioning as to private publication threaten the integrity or independence of the Senate by impermissibly exposing its deliberations to executive influence."^{[11][12][13][14]}

The Gravel case narrowed the protections offered by the Speech or Debate Clause.^[15]

In May 2006, theFBI raided the office of RepresentativeWilliam J. Jefferson, aDemocratic congressman fromLouisiana, in theRayburn House Office Building on Capitol Hill.^[16] The raid took place during the fourteenth month of an investigation into Jefferson's business ventures in Africa.

The FBI raid prompted a bipartisan uproar,^[17] with immediate objections from congressional leaders in both parties, who said that the raid was inappropriately aggressive and violated the Speech or Debate Clause.^[16] In a statement, RepublicanSpeaker of the HouseJ. Dennis Hastert stated: "The actions of the Justice Department in seeking and executing this warrant raise important Constitutional issues that go well beyond the specifics of this case. Insofar as I am aware, since the founding of our Republic 219 years ago, the Justice Department has never found it necessary to do what it did Saturday night, crossing this Separation of Powers line, in order to successfully prosecute corruption by Members of Congress. Nothing I have learned in the last 48 hours leads me to believe that there was any necessity to change the precedent established over those 219 years."^[16] Democratic House Minority LeaderNancy Pelosi stated that while "members of Congress must obey the law and cooperate fully with any criminal investigation", investigations "must be conducted in accordance with Constitutional protections and historical precedent".^[16] A number of legal experts stated that the raid was unconstitutional.

Jefferson challenged the raid as a violation of the Speech or Debate Clause, and in 2007, in the caseUnited States v. Rayburn House Office Building, Room 2113, Washington, D.C. 20515, theU.S. Court of Appeals for the District of Columbia Circuit unanimously ruled, 3–0, that the FBI's search was unconstitutional and ordered the FBI to return privileged documents seized in the raid.^[17][18] The court held that "the Congressman is entitled ... to the return of all materials (including copies) that are privileged legislative materials under the Speech or Debate Clause. Where the Clause applies its protection is absolute."^[18] The FBI was allowed to retain non-privileged material.^[17][18] While the Justice Department used special "Filter Team" procedures to review documents to determine whether they were related to legislative activity, the court found that this "would not have avoided the violation of the Speech or Debate Clause because they denied the Congressman any opportunity to identify and assert the privilege with respect to legislative materials before their compelled disclosure to Executive agents."^[18]

The Supreme Court declined to review the D.C. Circuit's decision.^[19] Jefferson was later convicted on the basis of other, unrelated evidence; in 2009, he was found guilty of bribery, racketeering, and money laundering in connection with his acceptance of bribes and payoffs in connection with these ventures; he was acquitted of several other charges.^[20]

In August 2006, U.S. RepresentativeJohn Murtha was sued byU.S. Marine Corps Staff SergeantFrank D. Wuterich, over statements that Murtha had made to reporters about theHaditha massacre,^[21] an incident inHaditha, Iraq in which 24 civilians were killed after U.S. troops under Wuterich, a squad leader, opened fire.^[22] (Wuterich was latercourt-martialed, and pleaded guilty to one count of negligent dereliction of duty in connection with the Haditha killings in a plea agreement with military prosecutors, following an investigation begun in March 2006.^[22][23])

In his 2006 complaint, Wuterich sued Murtha, alleging that the congressman's comments to the press that the Haditha killings constituted "cold-blooded murder andwar crimes" were defamatory and aninvasion of privacy.^[21][24] The remarks were made at a press conference and in a follow-up television interview.^[25] Wuterich also sought to compel Murtha to sit for adeposition in the civil case.^[26]

In 2007, U.S. District JudgeRosemary M. Collyer ruled that Murtha must testify in the defamation case; in response, commentators expressed concern that Murtha was acting as a lawmaker and was therefore protected by the Speech or Debate Clause.^[25] Murtha appealed, arguing that because he was acting in his legislative role when making the comments he had immunity from the lawsuit under theWestfall Act.^[27][28][29] The Westfall Act is a federal statute that "accords federal employees absolute immunity from common-lawtort claims arising out of acts they undertake in the course of their official duties", and immunizes such employees by substituting the United States itself for the employee as defendant in a case.^[29][30] In 2009, the U.S. Court of Appeals for the District of Columbia ruled in Murtha's favor, accepting his argument that he was acting in an official capacity, concluding that he was immune from suit, remanding the case to the district court and ordering dismissal of the case for lack ofsubject-matter jurisdiction due tosovereign immunity.^[29][31]

Mike Pence,Vice President of the United States in thefirst Trump administration, was requested by theJack Smith special counsel investigation to turn over evidence relating to Smith's investigation surrounding theJanuary 6 Capitol attack. A judge ruled in 2023 that the Speech or Debate Clause applies to the vice president whenever they are serving in their role asPresident of the Senate.^[32][33]

• Federal prosecution of public corruption in the United States

• Clauses of the United States Constitution
• Legal immunity
• Speech or Debate Clause case law

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