If you are a sponsor who resides within the United States, please fill out the I-134 Affidavit of Support. Date. An affidavit is a special document that promises that the statement you are making is true.Maryland Affidavit Templates. Use our Affidavit template to swear to the truthfulness of a statement or fact. A separate affidavit is required for each sponsor. Learn how to create an accurate affidavit letter with our free printable templates. Completing and signing Form I-864 makes you the sponsor. By signing Form I-864EZ, you are agreeing to use your income and resources to support the intending immigrant named in this affidavit, if it becomes necessary. The sponsor is required only to maintain the immigrant at 125 percent of FPG.