Documents for naturalization interview:
 Letter scheduling interview from USCIS officer
 Green card
 Photograph
 All the Passports used
 Driver license
 ID card or other documents to certify identity
 Social security card
 reentry permit
 recent years' tax return
 Original supporting documents for naturalization application(if the documents submitted with N-400 form are copies)
 N-648 form (Medical Certification for Disability Exceptions) ( if applicable)
 Proof of spouse has been a U.S. citizen for more than three years, such as, Birth Certificate of the spouse, Certificate of Naturalization, passport, FS-240form (if applicable)
 Marriage certificate (if applicable)
 Proof of termination of spouse's/your prior marriages, such as Divorce Decree, death certificate ( if applicable)
 Proof of your marriage being true, such as joint tax return, Life Insurance policy, health Insurance policy, joint bank account (if applicable)
 Proof of spouse working abroad, such as letters from employer (if applicable)
 Proof of receiving social benefit (if applicant is an elder and receive social benefit)
 Notified proof that applicant is supported by children (if applicant is an elder)
 Proof of registration with military service (if applicant is an male between 18-26 years old)
 Original N-426 form Request for Certification of Military or Naval Service form
 Proof of intent of permanent residence in U.S., such as utility bill, phone bill
 If applicant has criminal history, should carry official police, court report, clearance report and other relevant documents
 If applicant has children not live together, should carry proof of supporting
 Conscientious objection to oath, such as attestation by churches
 Waiver of fingerprinting requirement from USCIS officer

Documents for naturalization ceremony
 Green card
 Driver license
 Congratulation letter
 If petitioner marries, divorces, has child (ren) or goes abroad, etc, he/she should carry along marriage certificate, divorce certificate, child (ren) birth certificate, entry records and so on
 If petitioner join religion entity or believe in religion so that he/she cannot take complete oath, he/she must provide related supporting documents as evidence letter from church.