Use this form to swear under oath in writing to facts that you personally know. Search all USCIS forms.File your form online for a more convenient and secure experience. Fill in the sponsor's full name, date of birth, and contact information. Specify the relationship to the immigrant. The person who signs the Affidavit of Support is also called the "sponsor. These statutes show that a sworn declaration is just as effective as a notarized Affidavit. We all live in the same house and I am witness to a genuine martial relationship. We all live in the same house and I am witness to a genuine martial relationship. OFFICE OF FINANCIAL AID-CHICAGO.