An Affidavit of Support is US Immigration Form I-864. 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.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 process of establishing someone as your financial sponsor begins with completing and filing the form i-864 after debit of support. This article will provide information to assist you in filling out Form I134 to help foreign visitors applying for a tourist or other nonimmigrant visa. DV applicants who are required to present affidavit of support can only use I-134 to do so. The law does not allow DV applicants to use form I-864. Submitting Form I-130 (if applicable). Paying National Visa Center processing fees. The purpose of the form is to ensure that immigrant will not become dependent on public resources.