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. If you are coming to the United States on a temporary visa, you may need to prove financial support.A sponsor can file the I-134 form. The purpose of the Affidavit is to assist consular officers in determining whether a visa applicant will have adequate means of financial support in the US. An Affidavit of Support sponsor must be at least 18 years old and must be either a U.S. citizen or a lawful permanent resident. Does I134 affidavit of support form need to be notarized? Your financial sponsor(s) or you will need to submit evidence of income in the form of bank statements, loan letter or scholarship letter. Birth records are also available from the local Registrar of Vital Statistics where the event occurred. Questions or comments? Pay the fee, application fee, submit the visa application, the affidavit of support.