22 U.S.C. § 2656e
Terrorism-related travel advisories
(Pub. L. 99–399, title V, § 505, Aug. 27, 1986, 100 Stat. 871.)
The Secretary of State shall promptly advise the Congress whenever the Department of State issues a travel advisory, or other public warning notice for United States citizens traveling abroad, because of a terrorist threat or other security concern.