The authority for classifying information and granting security clearances to access that information is found in executive orders (EOs) and US Federal law. USA's National Security Information (NSI) has been classified under EO 13526, but since January 10, 2017 the rules were modified by James Clapper as Security Executive Agent Directive 4 in the closing days of the Obama administration.[14] Information may be classified under this Order if a classification authority determines its unauthorized release could cause damage to the national defense or foreign relations of the United States. Information concerning nuclear weapons and fissile material may be classified under the Atomic Energy Act of 1954 (AEA).