Executive Order 12333, Section 2.9 states:
Undisclosed Participation in Organizations Within the United States. No one acting on behalf of agencies within the Intelligence Community may join or otherwise participate in any organization in the United States on behalf of any agency within the Intelligence Community without disclosing his intelligence affiliation to appropriate officials of the organization, except in accordance with procedures established by the head of the agency concerned and approved by the Attorney General. Such participation shall be authorized only if it is essential to achieving lawful purposes as determined by the agency head or designee. No such participation may be undertaken for the purpose of influencing the activity of the organization or its members except in cases where:
(a) The participation is undertaken on behalf of the FBI in the course of a lawful investigation; or
(b) The organization concerned is composed primarily of individuals who are not United States persons and is reasonably believed to be acting on behalf of a foreign power.
