If not submitted to NVC along with the Affidavit of Support form, the petitioner will need to provide the visa applicant with evidence of his or her domicile. 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).Some types of evidence you can share to show you intend to establish domicile include: Opening a bank account. Transferring money to a United States account. This guide will clarify what domicile is, how to establish it, and the documentation you need for proof of domicile. Instructions: Complete this form to clarify for the Michigan Department of Treasury your domicile for tax purposes. Search all USCIS forms. File your form online for a more convenient and secure experience. Typically, in order to claim US domicile, the Affidavit of Support sponsor must be residing in the United States. Using an online account to update your address in a timely way meets the legal requirement to notify us that you have moved.