Here is the answer to that question from the Guangzhou website FAQ's! 17. I don’t understand the concept of domicile. Please check http://travel.state.gov/visa/immigrants/info/info_3183.html#_Domicile for further information about what constitutes a domicile and how domicile requirements can affect immigrant visa applications. 18. I'm divorced and applying for an immigrant visa. Do I need permission from my ex-spouse to take our child to the United States? The Consulate generally accepts either a notarized copy of the custody agreement currently in effect, or a notarized statement from the ex-spouse giving the child permission to travel. This requirement can vary, however, according to the circumstances of each case, and is ultimately at the discretion of the adjudicating consular officer. <a name="B19">19. What is a priority date and where can I find more information about it? For numerically limited visas, petitions are processed in the order of their priority dates. For family-based visas, the priority date is the date when the petition was filed at the relevant USCIS office. For employment-based visas, the priority date is typically the date the labor certification application was received by the U.S. Department of Labor. You can find current priority date information here. But, like Randy said, it really depends on the interviewing officer. Here is the link to the FAQ's if you want to read them for yourself. http://guangzhou.usembassy-china.org.cn/iv_faqs.html Good Luck