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. These form packets are designed for use before coming to the Courthouse to file, if you do not have an attorney to prepare your forms for you.An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents. We assist our clients in preparing and filing form I-864, Affidavit of Support, on their behalf or on behalf of their family member. In today's video we're going to fill out form i-864 the affidavit of support form together. It is one of the most confusing forms. Tasks to Complete Step 2. Affidavit of Financial Support for International Students (F-1). Spousal support;; Property division;; Debt allocation; and; Attorney fees. For assistance on completing this form, please watch our video.