Edu OR West Campus, 2202 W. Anklam Road,. Step 3: Fill out the Affidavit of Support form.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. This form must accompany a bank statement or letter from the bank. We prefer that you complete the form(s) online. After the form is completed on the computer, it must be printed and mailed as instructed. In this video we're going to show you how to complete an i 864 and affidavit of support that is needed as part of the package for an adjustment of status. Form I134 is used to document the personal finances of a sponsor who lives in the United States. It proves an application for a visa has sufficient financial means and is unlikely to become a public charge while in the country. The sponsor of an intending immigrant fills out and signs this form in black ink.