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. The two most common applications where the I-134 is used are for humanitarian parole and for a fiancé(e) nonimmigrant visa.The purpose of Form I-134 is to. One for the original petitioner and one for the joint sponsor. An Affidavit of Support is US Immigration Form I-864. Final admission is not granted until the Office of Admissions is satisfied that all documents are complete and correct. Some sponsors temporarily reside abroad and intend to move to the US once a family member's immigrant visa is issued. U.S. citizens can use this form to petition to bring their fiancé and children to the U.S. to marry their fiancé. The best way to apply for assistance is online using MI Bridges. The letter should be addressed to "Honorable Immigration Judge.