The Freedom of Information Act of 1966, 5 U. S. C. § 552, provides that Government agencies shall make available to the public a broad spectrum of information, but exempts from its mandate certain specified categories of information, including matters that are "specifically required by Executive order to be kept secret in the interest of the national defense or foreign policy," § 552 (b) (1), or are "inter-agency or intra-agency memorandums or letters which would not be available by law to a party other than an agency in litigation with the agency," § 552 (b) (5). It is the construction and scope of these exemptions that are at issue here.

READ MORE