You need a provincial attestation letter (PAL) or territorial attestation letter (TAL) to apply for a study permit. 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. United States: Form I-134 or I-864 Affidavit of Support is often required. Learn all about writing an affidavit in support of student visa for your education abroad, with two sample letters for reference. If you are not provided a form to complete for an affidavit of support, you will have to write your own. An Affidavit of Support is US Immigration Form I-864. To apply, simply fill out our online application. DS-260, Immigrant Visa and Alien Registration Application; DS-261, Online Choice of Address and agent. How to complete an online form.