Click the PDF icon to open a form. Then print and complete it before mailing to the address indicated on the form.List of acceptable documentary evidence needed to establish the residence(s) for tax purposes: 1. Providing proof of domicile in the United States is critical for most people when submitting Form I864, Affidavit of Support. Below you will be able to download application forms as a single fillable form. Do not photocopy the applications forms. If the account holder, or any applicable controlling persons or beneficiaries, are tax resident in a reportable jurisdiction, then the Fund may be required. 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). 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.