In accordance with Executive Order 13526, issued on 5 January 2010 (which replaced Executive Order 12958 as amended), an executive agency must declassify its documents after 25 years, unless they are covered by one of the nine strict exceptions described in point 3.3 of the decision. Classified documents from the age of 25 must be verified by all agencies interested in the sensitive information contained in the document. Documents classified for more than 50 years must refer to sources of human intelligence or weapons of mass destruction or obtain special authorization.  All documents over the age of 75 must have special authorization.  On May 9, 2008, President George W. Bush issued a presidential memorandum to consolidate the various denominations used in a new category known as Unclassified Information Control (CUI). CUI categories and subcategos should serve as exclusive names for the identification of unclassified information throughout the executive that is not covered by Executive Order 12958 or the Atomic Energy Act of 1954 (modified), but which nevertheless required protection or dissemination controls in accordance with the laws, regulations and governmental directives in force at that time. CUI would replace categories such as For Official Use Only (FOUO), Sensitive But Unclassified (SBU) and Law Enforcement Sensitive (LES).   The use of information restrictions outside the classification system is increasing within the U.S.
government. In September 2005, J. William Leonard, Director of the U.S. National Archives Information Security Oversight Office, was quoted in the press as saying, «No one in government can identify all controlled, unclassified [categories], let alone describe their rules.»  One of the reasons for classifying state secrets in sensitivity levels is to reduce the risk to the level of protection. The U.S. government sets out in detail the procedures for protecting classified information. Premises or buildings for the conservation and handling of classified materials must be released at the same level as the most sensitive materials to be handled. Good quality of commercial physical safety standards is generally sufficient for lower classification levels; At the highest level, people sometimes have to work in premises designed as bank vaults (see Sensitive Compartmented Information Facility — SCIF). The U.S.
Congress has such facilities in the Capitol building, among other things in the process of treating confidentiality by Congress.  The U.S. General Services Administration sets standards for locks and containers used to store classified information. The most frequently authorized security containers look like heavy filing cabinets with a combined lock in the center of a drawer.