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 22 quarters district by the United Nations or by such specialized agency on official business. The appropriate American authorities shall afford any necessary protection to such persons while in transit to or from the headquarters district. This section does not apply to general interruptions of transportation which are to be dealt with as provided in Section 17, and does not impair the effectiveness of generally applicable laws and regulations as to the operation of means of transportation.

Section 12

The provisions of Section 11 shall be applicable irrespective of the relations existing between the Governments of the persons referred to in that section and the Government of the United States.

Section 13

(a) Laws and regulations in force in the United States regarding the entry of aliens shall not be applied in such manner as to interfere with the privileges referred to in Section 11. When visas are required for persons referred to in that section, they shall be granted without charge and as promptly as possible.

(b) Laws and regulations in force in the United States regarding the residence of aliens shall not be applied in such manner as to interfere with the privileges referred to in Section 11 and, specifically, shall not be applied in such manner as to require any such person to leave the United States on account of any activities performed by him in his official capacity. In case of abuse of such privileges of residence by any such person in activities in the United States outside his official capacity, it is understood that the privileges referred to in Section 11 shall not be construed to grant him exemption from the laws and regulations of the United States regarding the continued residence of aliens, provided that:

(1) No proceedings shall be instituted under such laws or regulations to require any such person to leave the United States except with the prior approval of the Secretary of State of the United States. Such approval shall be given only after consultation with the appropriate Member in the case of a representative of a Member (or a member of his family) or with the Secretary-General or the principal executive officer of the appropriate specialized agency in the case of any other person referred to in Section 11; No. 147