First, let's get one important thing straight: Marriage to a U.S. citizen makes someone eligible for U.S. lawful permanent residence (a "green card"), not for U.S. citizenship. (At least, not in the short term.) Having a green card for a certain number of years can make the person eligible for U.S. citizenship.
Naturalization Process for Marriage Green Card Holders Meet Eligibility Requirements. Prepare Form N-400. Biometrics Appointment. Naturalization Interview. English and Civics Tests. Oath of Allegiance Ceremony. Receive Certificate of Naturalization.
3 Years of Continuous Residence. The spouse of a U.S. citizen residing in the United States must have continuously resided in the United States as an LPR for at least 3 years immediately preceding the date of the filing the application and up to the time of the Oath of Allegiance.
Getting a green card through marriage is a 3-step process: The U.S. citizen spouse establishes the marriage relationship by filing Form I-130. Apply for the green card through adjustment of status (Form I-485) if you're living in the U.S. or Form DS-260 if you're a foreign national living abroad.
Submitting Form I-130, Petition for Alien Relative, is the first step to help an eligible relative apply to immigrate to the United States and apply for a Green Card.
You may file Form N-400, Application for Naturalization, 90 calendar days before you complete your continuous residence requirement if your eligibility for naturalization is based upon being a: Permanent resident for at least 5 years; or. Permanent resident for at least 3 years if you are married to a US citizen.