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.The petitioner may fill out an Affidavit of Support, Form I-134. 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. 1 fiancee visa couple must complete both the I134 and the I864 forms. However, the forms are not filed together. Some sponsors temporarily reside abroad and intend to move to the US once a family member's immigrant visa is issued. There is no need to present an affidavit of support for a K-1 fiancé(e) visa when filing Form I-129F. Note: Mistakes in completing the I-864 are a common reason for delays with an immigrant visa application.