Pub. L. 109-108, tit. IV, sec. 413

Sec. 413. None of the funds made available by this title may be used for any United Nations undertaking when it is made known to the Federal official having authority to obligate or expend such funds that: (1) the United Nations undertaking is a peacekeeping mission; (2) such undertaking will involve United States Armed Forces under the command or operational control of a foreign national; and (3) the President’s military advisors have not submitted to the President a recommendation that such involvement is in the national security interests of the United States and the President has not submitted to the Congress such a recommendation.