On Form I864, petitioners must prove that they have the ability to financially support the visa applicant(s) if necessary. Physical presence alone does not establish domicile or residency.In this article, we'll explain how to prove US domicile as part of your Affidavit of Support so you can successfully sponsor a family member for a green card. Applicants must demonstrate that their presence in Michigan is primarily for purposes that are not related to enrollment. 4. 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. Typically, in order to claim US domicile, the Affidavit of Support sponsor must be residing in the United States. The certificate of residency obtained from your home county is the only proof of residence that qualifies for resident or in-state tuition. I am providing a copy of my documents along with a copy of a valid government-issued photo identification card bearing my portrait (or likeness). This guide will clarify what domicile is, how to establish it, and the documentation you need for proof of domicile.