Skip to main content

Freedom of Information Act 80 Stat. 378 (1966)


The Freedom of Information Act of 1966 establishes a public disclosure policy for information in the custody of the executive branch of the federal government. It authorizes public access to government records and provides administrative and judicial appeal of decisions to withhold them. The law mandates that unreleased executive branch records be made available on request; however, it permits the withholding of information in nine categories upon government justification. Among them are classified national security information, information protected by other statutes, internal advisory memoranda, invasions of privacy, certain law enforcement records, and certain confidential business information.

The idea of a freedom of information law was first championed by journalists concerned with the effects of government censorship and discretionary bureaucratic secrecy on freedom of the press and the accountability of public officials. After eleven years of congressional hearings, the Freedom of Information Act was passed in 1966, amending the Administrative Procedures Act which had allowed the withholding of almost all government records. Initial compliance with the new law fell short of congressional expectations, and effectuating amendments were passed over a presidential veto in 1974.

As the keystone of "open government" legislation, the act was the first of several statutes that subject certain records and activities of the federal government to public scrutiny. These include the Federal Advisory Committee Act of 1972, the privacy act of 1974, the Government in the Sunshine Act of 1976, and the Presidential Records Act of 1978.

The freedom of information policy established by the law does not flow from an express, constitutional right to know. Some controversy surrounds the question of whether a public right to know is merely political rhetoric or is an unenumerated constitutional right protected by the ninth amendment. a majority of the Justices of the Supreme Court concluded, in richmond newspapers, inc. v. virginia (1980), that the first amendment gave the public a right of access to criminal trials, which rests on the traditional importance of citizen scrutiny of the judicial trial process. In a separate opinion, Justice william j. brennan argued that the theory of citizen participation in self-government also supports the right, and that this logic is not confined to access to courtrooms. In another concurring opinion, Justice john paul stevens pointed out that in this case the Court recognized for the first time a protected right of access to important government information.

executive privilege is embodied in several exemptions to the 1966 Act. Although the scope of the privilege remains in dispute, the Supreme Court in obiter dictum in united states v. nixon (1974) recognized the authority to withhold military and diplomatic national security information, as well as internal memoranda that are advisory and not factual in nature. Later that year, in his veto message returning the 1974 amendments to Congress, President Ford declared that the provision for judicial review of executive branch determinations as to national security classification violates constitutional principles. However, the government has never pressed that argument in litigation.

Individuals have found the act useful for obtaining business information and as an alternative to judicial discovery. Open government policies have affected administrative behavior. Federal law enforcement practices were somewhat restrained after dubious covert investigative activities were disclosed. A government study following the 1974 amendments found that attitudes in the bureaucracy had become more positive toward the release of information and that the quality of some government work had improved because of public scrutiny.

Everett E. Mann, Jr.


Mann, Everett E. 1984 The Public Right to Know Government Information: Its Affirmation and Abridgment. Ph.D. dissertation, Claremont Graduate School.

Cite this article
Pick a style below, and copy the text for your bibliography.

  • MLA
  • Chicago
  • APA

"Freedom of Information Act 80 Stat. 378 (1966)." Encyclopedia of the American Constitution. . 20 Apr. 2019 <>.

"Freedom of Information Act 80 Stat. 378 (1966)." Encyclopedia of the American Constitution. . (April 20, 2019).

"Freedom of Information Act 80 Stat. 378 (1966)." Encyclopedia of the American Constitution. . Retrieved April 20, 2019 from

Learn more about citation styles

Citation styles gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association (MLA), The Chicago Manual of Style, and the American Psychological Association (APA).

Within the “Cite this article” tool, pick a style to see how all available information looks when formatted according to that style. Then, copy and paste the text into your bibliography or works cited list.

Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, cannot guarantee each citation it generates. Therefore, it’s best to use citations as a starting point before checking the style against your school or publication’s requirements and the most-recent information available at these sites:

Modern Language Association

The Chicago Manual of Style

American Psychological Association

  • Most online reference entries and articles do not have page numbers. Therefore, that information is unavailable for most content. However, the date of retrieval is often important. Refer to each style’s convention regarding the best way to format page numbers and retrieval dates.
  • In addition to the MLA, Chicago, and APA styles, your school, university, publication, or institution may have its own requirements for citations. Therefore, be sure to refer to those guidelines when editing your bibliography or works cited list.