If the Secretary determines that the national security interests of the United States require the opening or reopening of a high risk, high threat post in fewer than 30 days, then as soon as possible, but not later than 48 hours before such opening or reopening, the Secretary shall transmit to the appropriate congressional committees a notification detailing the decision to open or reopen such post, the nature of the critical national security interests at stake, and the circumstances that prevented the normal 30-day notice under paragraph (1).
22 U.S. Code § 4804 - Briefings on embassy security
Title I of the Department of State Authorities Act, Fiscal Year 2017, referred to in subsec. (a)(4), is title I of Pub. L. 114–323, Dec. 16, 2016, 130 Stat. 1907, which enacted this section and sections 304, 2679d, 4803, and 4866 to 4868 of this title, amended sections 292, 295, 2701, 4834, 4864, and 4865 of this title, enacted provisions set out as notes under sections 4802 and 4834 of this title, and amended provisions set out as a note under section 4865 of this title.