Completing and signing Form I-864 makes you the sponsor. To start the declaration, the person should state their complete name and address, as well as their country of citizenship.An affidavit is like someone vouching for you. Is a sworn statement that is signed and dated. You don't need to notarize the I751 affidavit of support, but you should include a sworn statement that the contents are true and accurate. Learn how to write a sworn affidavit for immigration with our comprehensive guide. Includes ChatGPT prompt. Much confusion surrounds the need to submit I751 affidavits and how to write them. We explain and provide an I-751 affidavit sample. The form and instructions are online at the USCIS website at Affidavit of Support.