The Freedom of Information Act (FOIA), , 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. This amendment was signed into law by President Lyndon B. Johnson, despite his misgivings, on July 4, 1966, and went into effect the following year.