Pub. L. 113-6, div. B, tit. V, sec. 529

Sec. 529. None of the funds made available in this Act may be used to send or otherwise pay for the attendance of more than 50 employees from a Federal department or agency at any single conference occurring outside the United States, unless such conference is a law enforcement training or operational conference for law enforcement personnel and the majority of Federal employees in attendance are law enforcement personnel stationed outside the United States.