31 C.F.R. § 50.60 – Certification.

(a) Certification decision. The Secretary, in consultation with the Attorney General of the United States and the Secretary of Homeland Security, is responsible for determining whether to certify an act as an act of terrorism.
(b) Timeline for eligibility. An act is eligible for certification as an act of terrorism at the end of the following timeline:
1. (1) The Secretary commences review of whether an act satisfies the definition in § 50.4(b);
2. (2) Within 30 days of the Secretary commencing review, Treasury publishes the notice required by § 50.61(a). During such review, the schedule of public notifications in § 50.61(b) shall apply, as appropriate;
3. (3) The Secretary's review finds that the act satisfies the elements for certification under § 50.4(b)(1)(i) through (iv), and that it is not otherwise precluded from certification by § 50.4(b)(2); and
4. (4) Within 30 days or as soon as otherwise practicable after the review identified in paragraph (b)(3) of this section concludes that the act satisfies the necessary criteria, the Secretary consults with the Attorney General of the United States and the Secretary of Homeland Security pursuant to section 102(1)(A) of the Act.
(c) Other consultation. Nothing in this section shall prevent the Secretary from consulting and coordinating with the Attorney General of the United States, the Secretary of Homeland Security, or any other government official prior to the consultation identified in paragraph (b)(4) of this section.
(d) Finality. Any decision by the Secretary to certify, or determination not to certify, an act as an act of terrorism under this subpart shall be final, and shall not be subject to judicial review.
(e) Nondelegation. The Secretary may not delegate or designate to any other officer, employee, or person, the determination of whether to certify an act as an act of terrorism.