A spouse of a U.S. citizen must submit with the application evidence to establish the U.S. citizenship of his or her spouse. Who is eligible to apply for citizenship?You must file an I-130 form (Petition for Alien Relative) along with two passport-time pictures of the spouse and filled-out Form I-130A for the spouse. What is the Application Process for a C-R1 Visa? Been physically present in the United States for at least 30 months of those five years. To sponsor your family member, submit a United States Citizenship and Immigration Services (USCIS) Form I130. The applicant must demonstrate a good faith intent to return and live in the United States upon their spouse's termination of employment abroad. If you're married to a U.S. citizen, you can apply for a green card to establish lawful permanent residence in the United States. After three years of marriage, green card holders married to U.S. citizens can apply for citizenship. After three years of marriage, green card holders married to U.S. citizens can apply for citizenship.