After the form is completed, upload, and submit the signed form to NVC via CEAC along with the sponsor's supporting financial evidence. Providing proof of domicile in the United States is critical for most people when submitting Form I864, Affidavit of Support.Typically, in order to claim US domicile, the Affidavit of Support sponsor must be residing in the United States. A declaration is a simple statement that you intend in good faith to return to the United States to resume your domicile. You have to submit at NVC, NVC's job is to collect the documents for the consulate and make sure they are complete. Use this form to show they have adequate means of financial support and are not likely to rely on the US government for financial support. Please submit proof of domicile. When filing Form I864, it is important to fill out the form completely and provide all required information with your initial filing. This guide will clarify what domicile is, how to establish it, and the documentation you need for proof of domicile.