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. General Forms ; GF-5d. SC-3. CRIM-5.Affirmation In Support Of Modification Of Family Court Order Of Protection Or Temporary Order Of Protection. Much confusion surrounds the need to submit I751 affidavits and how to write them. We explain and provide an I-751 affidavit sample. If you call it an "affidavit" , it need to be notarized. An Affidavit of Support is a document family-based immigrants must file when seeking to become permanent residents of the United States. A) Complete the application for a Certificate of Residence. B) Sign the application in front of a NOTARY PUBLIC. An affidavit of support, (USCIS Form I-864), is required for all immediate relatives of US citizens and lawful permanent residents.