22 U.S.C. § 4315: Use of foreign mission in manner incompatible with its status as foreign mission

A foreign mission may not allow an unaffiliated alien the use of any premise of that foreign mission which is inviolable under United States law (including any treaty) for any purpose which is incompatible with its status as a foreign mission, including use as a residence. For the purposes of this section, the term “residence” does not include such temporary lodging as may be permitted under regulations issued by the Secretary. The Secretary may waive subsection (a) with respect to all foreign missions of a country (and may revoke such a waiver) 30 days after providing written notification of such a waiver, together with the reasons for such waiver (or revocation of such a waiver), to the Committee on Foreign Affairs of the House of Representatives and the Committee on Foreign Relations of the Senate. Not later than 180 days after December 22, 1987 , the Secretary of State shall submit a report to the Congress concerning the implementation of this section and shall submit such other reports to the Congress concerning changes in implementation as may be necessary. the term “foreign mission” includes any international organization as defined in section 4309(b) of this title ; and is admitted to the United States as a nonimmigrant, and is not a member, or a family member of a member, of a foreign mission of that foreign country. Except as provided in paragraph (2), the amendment made by subsection (a) [enacting this section] shall apply to any foreign mission beginning on the date of enactment of this Act [ Dec. 22, 1987 ]. The amendment made by subsection (a) shall apply beginning 6 months after the date of enactment of this Act with respect to any nonimmigrant alien who is using a foreign mission as a residence or a place of business on the date of enactment of this Act. The Secretary of State may delay the effective date provided for in subparagraph (A) for not more than 6 months with respect to any nonimmigrant alien if the Secretary finds that a hardship to that alien would result from the implementation of subsection (a).”