Much confusion surrounds the need to submit I751 affidavits and how to write them. We explain and provide an I-751 affidavit sample.Learn how to complete a marriage affidavit template with our stepbystep guide for newlyweds. Use our I130 affidavit sample and tips to create a strong affidavit for your spouse. Include these key points and avoid common mistakes. This document provides a guide for writing an affidavit to support your Form I-130 petition. It includes a sample affidavit and detailed instructions. 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. My partner and I recently got married but currently live in different countries; she resides in the States while I'm in Canada. Illinois Affidavit Templates.