This form must accompany a bank statement or letter from the bank. Edu OR West Campus, 2202 W. Anklam Road,.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. Section A - Personal Information (Student): Please enter all your personal data here and indicate which study program you are applying for. 864 Affidavit of support How to fill out the Form 864 immigration Tips. Completing and signing Form I-864 makes you the sponsor. The purpose of the Affidavit is to assist consular officers in determining whether a visa applicant will have adequate means of financial support in the US. She has asked us to fill out an affidavit of support (I-864) also. Be sure to complete both sides of this form. If you are not provided a form to complete for an affidavit of support, you will have to write your own.