(B) Section 319(b) of the Act . This section of law requires that the applicant be a LPR (no set period) and that he or she is the spouse of a United States citizen who is assigned overseas with one of the following:
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• U.S. firm engaged in the development of foreign trade and commerce of the US international organization of which the U.S. participates by treaty or statute,
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In addition, the applicant must:
• Submit his/her application to any USCIS office;
• Be present in the U.S. at the time of naturalization;
• Declare in good faith an intention to take up residence within the U.S. immediately following the termination of employment abroad of the U.S. citizen spouse;
• (Generally) submit an affidavit from the spouse's employer itemizing the nature of the employment, length of time the spouse will be employed abroad, the ownership of the organization and the nature of the organization along with the naturalization application;
• Naturalize upon compliance with all the requirements of the naturalization laws, except that no prior residence or specified period of physical presence within the U.S. or within a District or state shall be required; and
• Establish that he or she will depart to join the citizen spouse within 30-45 days after the date of naturalization.