5 C.F.R. § 1312.5
(a) The authority to originally classify information or material under this part shall be limited to those officials concerned with matters of national security. The officials listed in this section are granted authority by the Director, OMB, to assign original classifications as indicated to information or material that is originated by OMB staff and relating to the national security of the United States:
(1) Top Secret and below:
(2) Secret and below: