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. Form I864, Affidavit of Support, needs to be filed DHS if you are a U.S. citizen or LPR planning to sponsor a spouse or family member.You simply complete the two form I-864 Affidavits of Support for your parents truthfully based on your household situation and income. 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. This document, often Form I864, is required for familybased green card applications. For more information about the sponsor's financial obligation, check out our guide to the Affidavit of Support (Form I-864). Learn how obligations under Form I-864A end: U.S. citizenship, 40 work credits, or permanent departure. Know the changes and protect rights. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. To become a lawful permanent resident or get a green card in the United States, an intending immigrant needs a sponsor to sign an Affidavit of Support.