The National Security Council (NSC) was established by statute in 1947 to create an inter-departmental body to offer confidential advice to the President on all aspects of national security policy. Currently, statutory members of the Council are the President, Vice President, the Secretary of State, and the Secretary of Defense; but, at the President's request, other senior officials participate in NSC deliberations. The Chairman of the Joint Chiefs of Staff and the Director of National Intelligence are statutory advisers. In 2007, the Secretary of Energy was added to the NSC membership.