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 required financial documentation is needed to issue your I-20 student visa eligibility certificate.Certified financial statements and Affidavit of Support. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. Line-by-line guidance for properly filling out USCIS's I-864 Affidavit of Support to sponsor an immigrating family member. All individuals seeking a UDC Form I-20 to apply and obtain F-1 student status must complete an Affidavit of Financial Support for. Completing and signing Form I-864 makes you the sponsor. The below sheet provides instructions on how to complete and submit the Affidavit of Financial Support for I-20 Issuance form. Complete the Online Visa Application The DS-160 online nonimmigrant visa application form must be submitted prior to your visa interview. INS previously used an I-134 affidavit of support for people who sponsored a family member.