The Freedom of Information Act
) is a federal freedom of information law
that allows for the full or partial disclosure of previously unreleased information and documents controlled by the United States government
. The Act defines agency records subject to disclosure, outlines mandatory disclosure procedures and grants nine exemptions to the statute. It was originally signed into law by President Lyndon B. Johnson
, despite his misgivings, on July 4, 1966 as 5 U.S.C. § 552
and went into effect the following year.