《美国移民和国籍法》

　　Every alien (other than a nonimmigrant described in subparagraph (L) or (V) of section 101(a)(15), and other than a nonimmigrant described in any provision of section 101(a)(15)(H)(i) except subclause (b1) of such section) shall be presumed to be an immigrant until he establishes to the satisfaction of the consular officer, at the time of application for a visa, and the immigration officers, at the time of application for admission, that he is entitled to a nonimmigrant status under section 101(a)(15) . An alien who is an officer or employee of any foreign government or of any
　　international organization entitled to enjoy privileges, exemptions, and immunities under the International Organizations Immunities Act [22 U.S.C. 288, note], or an alien who is the attendant, servant, employee, or member of the immediate family of any such alien shall not be entitled to apply for or receive an immigrant visa, or to enter the United States as an immigrant unless he executes a written