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. An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents.The purpose of the Affidavit is to assist consular officers in determining whether a visa applicant will have adequate means of financial support in the US. Completing and signing Form I-864 makes you the sponsor. You must also submit an affidavit of support for your parent, referred to as the I-864 form. Form I134 is used to document the personal finances of a sponsor who lives in the United States. For immigrant visa cases at the National Visa Center (NVC) use the NVC Public Inquiry Form. 1. Visa application form. Each applicant must complete and sign a visa application, filling out every section. Consular officers do have guidance material that they should consider in granting or denying a visa.