32 CFR 2400.28: Dissemination of classified information.
Heads of OSTP offices shall establish procedures consistent with this Regulation for dissemination of classified material. The originating official may prescribe specific restrictions on dissemination of classified information when necessary.
(a) Classified information shall not be disseminated outside the executive branch except under conditions that ensure that the information will be given protection equivalent to that afforded within the executive branch.
(b) Except as provided by directives issued by the President through the National Security Council, classified information originating in one agency may not be disseminated outside any other agency to which it has been made available without the consent of the originating agency. For purposes of this Section, the Department of Defense shall be considered one agency.