An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents. 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.In this video we're going to show you how to complete an i 864 and affidavit of support that is needed as part of the package for an adjustment of status. Complete the Affidavit of Support form and make sure that you have signed and dated it. You will also need to include all supporting documents with the form. If you are living with your spouse or your spouse has signed an affidavit of support, your spouse's income, resources, and property are also counted. It is important for family courts adjudicating child and spousal support issues, affidavit of support enforcement and other financial matters in. An Affidavit of Support is US Immigration Form I-864. A Form I864, Affidavit of Support under Section 213A of the INA. Webster University currently recruits most of its international students at two locations in the United States.