If your fiancee is not a citizen of the United States and you plan to get married in the United States, then you must file a petition with INS on behalf of your fiancee. After the petition is approved, your fiancee must obtain a visa issued at a U.S. Embassy or consulate abroad. The marriage must take place within 90 days of your fiancee entering the United States. If the marriage does not take place within 90 days or your fiancee marries someone other than you (the U.S. citizen filing INS Form I-129F - Petition for Alien fiancee), your fiancee will be required to leave the United States. Until the marriage takes place, your fiancee is considered a nonimmigrant. A nonimmigrant is a foreign national seeking to temporarily enter the United States for a specific purpose. A fiancee may not obtain an extension of the 90-day original nonimmigrant admission.