This form can be copied and used for multiple sponsors, if needed. Documentation of my financial resources is included.Signature of sponsor. Learn how to create an accurate affidavit letter with our free printable templates. Download PDF form to your computer first. This is a sample letter for F-1 and J-1 supporters, showing that they are providing monetary support to students. An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents. This article will review those legal requirements, the six situations that terminate the affidavit of support, and the legal rights of the sponsored immigrant. Fill out the form, save it, and close it. The Affidavit of Support is a Contract between Sponsor and Household Member.