Step 1. Determine if you are already a U.S. citizen. Step 2. Determine if you are eligible to become a U.S. citizen. Step 3. Prepare your Form N-400, Application for Naturalization. Step 4. Submit your Form N-400, Application for Naturalization. Step 5. Go to the biometrics appointment, if applicable. Step 6. Complete the interview. Step 7. Receive a decision from USCIS on your Form N-400, Application for Naturalization. Step 8. Receive a notice to take the Oath of Allegiance.Step 9. Take the Oath of Allegiance to the United States. Step 10. Understanding U.S. citizenship. -USCIS
