The Secretary of the Interior's trust principles were first issued by Secretary Babbitt in April 2000 with Secretarial Order 3215. They were eventually incorporated into the Departmental Manual.
Trust Principles. It is the policy of the Department of the Interior to discharge, without limitation, the Secretary's Indian trust responsibility with a high degree of skill, care, and loyalty. The proper discharge of the Secretary's trust responsibilities requires that persons who manage Indian trust assets: