There are several types of Affidavit of Support forms (I-864, I-864EZ, I-864W, and I-864A). 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.Form I-134 Affidavit of Support is an important supporting document for your non-US immigrant visa request. An Affidavit of Support is US Immigration Form I-864. It's on the visa applicant to proof strong ties to their home country and that they'll return after their visit. Complete all three eForms. Make sure to click "submit" at the bottom of the screen for each form. Assistantship Affidavit for F-1 Students, This form can be used to show funding for I-20 issuance. Affidavit of financial support form available here: AFFIDAVIT. Note: Mistakes in completing the I-864 are a common reason for delays with an immigrant visa application.