What is an Affidavit of Support? A) Complete an Affidavit of Support form and; b) Gather evidence of their finances and other supporting documents (See Step 5).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 affidavit is required for most family based immigrants and some employment based intended immigrants to show that they have adequate means of financial support. 864 affidavits are required in all familybased immigration cases. Completing and signing Form I-864 makes you the sponsor. Claim the ACR I-. Card (Applicant must present the visa implemented on passport and claim stub at Windows 3 or 4). 1. If you exceed that limit you must prove that you have a Washington residence for non-college reasons. Admission decisions are made only after receipt of a complete application and application fee. Academic Degree-seeking international applicants.