Section 9
(a) The headquarters district shall be inviolable. Federal, state or local officers or officials of the United States, whether administrative, judicial, military or police, shall not enter the headquarters district to perform any official duties therein except with the consent of and under conditions agreed to by the Secretary-General. The service of legal process, including the seizure of private property, may take place within the headquarters district only with the consent of and under conditions approved by the Secretary-General.
(b) Without prejudice to the provisions of the General Convention or Article IV of this agreement, the United Nations shall prevent the headquarters district from becoming a refuge either for persons who are avoiding arrest under the federal, state, or local law of the United States or are required by the Government of the United States for extradition to another country, or for persons who are endeavoring to avoid service of legal process.
Section 10
The United Nations may expel or exclude persons from the headquarters district for violation of its regulations adopted under Section 8 or for other cause. Persons who violate such regulations shall be subject to other penalties or to detention under arrest only in accordance with the provisions of such laws or regulations as may be adopted by the appropriate American authorities.
Article IV
Communications and Transit
Section 11
The federal, state or local authorities of the United States shall not impose any impediments to transit to or from the headquarters district of: (1) representatives of Members or officials of the United Nations, or of specialized agencies as defined in Article 57, paragraph 2, of the Charter, or the families of such representatives or officials, (2) experts performing missions for the United Nations or for such specialized agencies, (3) representatives of the press, or of radio, film or other information agencies, who have been accredited by the United Nations (or by such a specialized agency) in its discretion after consultation with the United States, (4) representatives of non-governmental organizations recognized by the United Nations for the purpose of consultation under Article 71 of the Charter, or (5) other persons invited to the head-
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