Below is a list of frequently requested Human services forms. Click on the form to complete and print.• Domicile certificate (if applicable). • Non creamy-layer certificate (if applicable). If you want to sponsor someone for a family-based green card, you need to provide proof of a U.S. domicile in your Affidavit of Support (Form I-864). Submit your completed application to your county or tribal agency where you reside. Recertifications. Report all changes in the past 12 months on this. This guide will explain how to prove domicile when filling out Form I-864 ("Affidavit of Support"). Consular processing support without the high price tag. This guide will clarify what domicile is, how to establish it, and the documentation you need for proof of domicile.