Becoming a U.S. citizen is the final step of many immigration journeys. These naturalization guides explain who is eligible, how the Form N-400 application works, and how to prepare for the English and civics test and the citizenship interview—so you can walk in confident.
We also cover the residence and physical-presence requirements, the difference between the three-year and five-year rules, dual citizenship and what it means for your original passport, and the oath of allegiance ceremony. Whether you're checking your eligibility or finalizing your application, start here—and consult an immigration lawyer if your case involves long trips abroad, a criminal record, or other complications.