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. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card.The public charge ground of inadmissibility does apply to winners of the diversity visa lottery, but they need not have an I-864 filled out on their behalf. In this guide, we will explain who needs to complete Form I864, when to file it, and how to fill out Form I864 stepbystep. Need help to fill out your Affidavit of Support? Call Immigration attorney Vinogradsky routinely helps with I-864 Form. The form to use is the Affidavit of Support(I134). Just tell your sponsor to fill that and send it to you. This video will help you complete the new I-134 which is used in some immigration cases such as DV lottery. Financial sponsors for green card applicants use Form I-864, Affidavit of Support, to remove the public charge grounds for inadmissibility.