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Assistant Secretary's Orders (ASOs) are limited to delegations of authority, emergency directives, special assignment of functions, and initial policy and functional statements establishing a new organizational unit. ASO provisions remain in effect for one year unless extended, revoked, or incorporated into the Indian Affairs Manual. ASOs are signed only by the Assistant Secretary, the Deputy Assistant Secretaries, or an Acting Assistant Secretary.
indianaffairs.gov
An official website of the U.S. Department of the Interior
