Where you file your Form I485 depends on your eligibility category. Review the information below to see where you should file your application.You can file your Form I130 online. If you choose to mail your form instead, use the table below to find the correct filing address. Petitioners filing Form I-130 for a spouse beneficiary must also file Form I-130A, Supplemental Information for a Spouse Beneficiary. If a person is filing for their spouse, they must complete and sign Form I130A, Supplemental Information for Spouse Beneficiary. Your complete guide to Form I-130, the Petition for Alien Relative: eligibility, filing, processing times, and the latest USCIS updates. An I130 affidavit is a written statement from friends, family members, or associates who can attest to the genuine nature of your marriage. For more information on how to apply for a spousal visa and which type applies to your case, call our Phoenix spousal visa attorneys at . The function of this form is to show USCIS that a valid family relationship exists between the petitioner and the individual seeking a green card.