The security clearance required by the Ministry of Energy for access to top-secret restricted data, previously limited data and national security information, as well as limited secret data, is a Q authorization. The lower L sharing is sufficient for access to previously limited secret data and national security information, as well as restricted confidential data and previously limited data.  In practice, access to limited data is granted to staff, with appropriate authorizations, on the basis of knowledge needs. At the same time, a person may own both a TS and a Q support room, but this duplication and fees are no longer necessary. For all practical uses, Q matches Top Secret and L is the secret. In 1956, the U.S. Department of Defense estimated that 90% of its secret documents could be made public without harming national security.  The National Security Archive has collected a number of examples of government overclassification and censorship that have obscured documents already published in their entirety or edited completely different parts of the same document at different times.  The U.S. government classification system was established under Executive Order 13526, the latest in a long series of executive orders on the subject.  Executive Order 13526, adopted in 2009 by President Barack Obama, replaced previous executive orders in this area and amended the codified rules to 32 C.F.R. 2001.
It defines the system for classifying, declassifying and managing national security information generated by the U.S. government and its employees and contractors, as well as information received from other governments.  In accordance with Executive Order 12968, clearance holders must meet reporting obligations. Clearance holders are required to self-declare anything that may be prohibitive according to the awarding guidelines. Staff members are also encouraged and expected to disclose any information that raises doubts about the clear compatibility with national security of another staff member`s ability to access classified information. In addition to the psB requirements, market authorization holders must notify their own hierarchy and meet all additional agency-specific requirements. After the termination or withdrawal of an authorization, the person is informed and signs the form in which he understands his responsibility for the continuation of the protection of the classified information to which he has had access. The SF-312 must be kept for 70 years at the end of the authorization. Contrary to tradition, the release of Yankee White for employees working directly with the president is not a classification. Individuals with Yankee White authorizations are subject to a thorough in-depth investigation. The criteria include U.S.
citizenship, undeniable loyalty and the absolute absence of foreign influence over the individual, his or her family or “the person with whom the person is closely related.”   In addition, they must not have traveled (except under government and on instruction from the United States) to countries considered hostile to the United States. [Citation required] Yankee White`s deleted staff will have access to all the information they need to know about, regardless of the organization they have classified or at what level. [Citation required] The SF-312 Classified Information Nondisclosure Briefing trains staff who need access to classified information about their roles and responsibilities.