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. Completing and signing Form I-864 makes you the sponsor.In this guide, we will explain who needs to complete Form I864, when to file it, and how to fill out Form I864 stepbystep. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. This form is required in most familybased green card applications, including CR1 and IR1 spouse visas and some employmentbased green card applications. Form I-864 is required for most family-based immigrants and some employment-based immigrants to show that they have adequate means of financial support. Form I-134 is a promise to financially support a person applying for a temporary visa to the United States, namely a travel visa or a K-1 fiancé visa. The balance on the bank statement must be equal or higher than the amount indicated in the Option 2 box of the affidavit of support. Immigrant visas are those for aliens who are seeking to remain in the United States on a long-term or permanent basis. If you feel that you need some help with the Form I-864, Affidavit of Support, you are not alone.