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 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.This form is required in most familybased green card applications, including CR1 and IR1 spouse visas and some employmentbased green card applications. The "Affidavit of Support" is a signed document to accept financial responsibility for a family member who is seeking a green card. 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. The petitioner may fill out an Affidavit of Support, Form I-134. 864 Affidavit of support How to fill out the Form 864 immigration Tips US mmigration with Attorney Jacob Sapochnick After the appropriate form with documentation is complete, the petitioner should send it to the National Visa Center. What does the NVC do with the I-864? There is no need to present an affidavit of support for a K-1 fiancé(e) visa when filing Form I-129F.