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. Completing and signing Form I-864 makes you the sponsor.The I-864 Affidavit of Support is more than paperwork; it's a commitment to support a family member or employee embarking on a new life in the US. Affidavit of support for sponsoring family members for green cards include listing the income, co-sponsors and assets, immigration forms I-864 and I-130. To qualify as a sponsor, a petitioner must complete an affidavit of support (form I864) demonstrating that the sponsor has sufficient means. Form I-864, the Affidavit of Support, plays a crucial role in family-based green card applications, with domicile being a key factor for sponsors. There is no cost to register for the DV Lottery Program. If you're selected in the DV Lottery, you must fill out the DS260 form online, which is the Immigrant Visa and Alien Registration Application. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. The doctor will need the following items to complete the medical exam forms: •.