[20050107]97-771GOV_安全分类政策和程序：E、 O12958修订版.pdf

1 52 Stat. 3.Congressional Research Service The Library of CongressCRS Report for CongressReceived through the CRS WebOrder Code 97-771 GOVUpdated January 7, 2005Security Classification Policy and Procedure:E.O. 12958, as AmendedHarold C. RelyeaSpecialist in American National GovernmentGovernment and Finance DivisionSummaryAfter two years of preparation, E.O. 12958, prescribing security classificationpolicy and procedure, was signed by President William Clinton in mid-April 1995. Theorder was prompted by changing security conditions in the aftermath of the end of thecold war and a desire for more economical and effective management of classifiedinformation. The directive was modified in late March 2003 by E.O. 13292, issued byPresident George W. Bush. Largely prescribed in a series of successive presidentialexecutive orders issued over the past 50 years, security classification policy andprocedure provide the rationale and arrangements for designating information officiallysecret for reasons of national security, and for its declassification as well.BackgroundAlthough formal armed forces information security orders had been in existencesince 1869, security classification arrangemen