National security directives are presidential directives issued for the National Security Council (NSC). Starting with Harry Truman, every president since the founding of the National Security Council in 1947 has issued national security directives in one form or another, which have involved foreign, military and domestic policies. National security directives are generally highly classified and are available to the public only after "a great many years" have elapsed. Unlike executive orders, national security directives are usually directed only to the National Security Council and the most senior executive branch officials, and embody foreign and military policy-making guidance rather than specific instructions.
A presidential directive, or executive action, is a written or oral instruction or declaration issued by the president of the United States, which may draw upon the powers vested in the president by the U.S. Constitution, statutory law, or, in certain cases, congressional and judicial acquiescence. Such directives, which have been issued since the earliest days of the federal government, have become known by various names, and some have prescribed forms and purposes. Presidential directives remain in effect until they are revoked, which the president is free to do. The classification of presidential directives is not easily done, as the distinction between the types can be quite arbitrary, arising from convenience and bureaucratic evolution, and none are defined in the Constitution. Furthermore, the different types may overlap. As one legal scholar put it: "it is a bit misleading to overclassify presidential directives as comprising separate and distinct 'types' just because they have different headings at the top of the first page." In terms of legal applicability, what matters is the substance of the directive, not the form, unless a certain kind of directive is specifically required by relevant statute.
Executive orders are issued to help officers and agencies of the executive branch manage the operations within the federal government itself. Presidential memoranda are closely related, and have the force of law on the Executive Branch, but are generally considered less prestigious. Presidential memoranda do not have an established process for issuance, and unlike executive orders, they are not numbered. A presidential determination is a determination resulting in an official policy or position of the executive branch of the United States government. A presidential proclamation is a statement issued by a president on a matter of public policy issued under specific authority granted to the president by Congress and typically on a matter of widespread interest. Administrative orders are signed documents such as notices, letters, and orders that can be issued to conduct administrative operations of the federal government. A presidential notice or a presidential sequestration order can also be issued. National security directives1 operate like executive orders, but are only in the area of national security. They have been issued by different presidents under various names.
