"This final rule revises the Department of Homeland Security's procedures for managing classified national security information. This rule implements procedures required under Executive Order 12958, 'Classified National Security Information,' as amended by Executive Order 13292, and amends the initial procedures established when the Department was created in January 2003. Further, this rule delegates to the Chief Security Officer of the Department of Homeland Security the responsibility of serving as the 'Senior Agency Official' pursuant to Executive Order 12958, as amended."
6 CFR Part 7
Government Printing Office: http://www.access.gpo.gov/
Federal Register (October 21, 2005), v.70 no.203, p.61211-61217