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 is US Immigration Form I-864.If you have a joint sponsor, they must also complete Form I864. This video will help you to fill out I-864 For Joint Sponsor. You, the sponsor (petitioner), and the joint sponsor must complete Form I-864. See tips for completing Form I-864. Any nondependent siblings, parents, or adult children who reside in the sponsor's household who are not dependents, if they complete a Form I-864A. If you are filing Form I864 as the petitioning sponsor, use our How to Fill Out Affidavit of Support Form I864 guide. Rooms and Meals Affidavit, Use this form if you have a US sponsor who will provide room and meals during your studies at UT Dallas. This form and any proof submitted do not guarantee the issuance of a Texas driver license or identification card. 1.