This article was written by David Katona and by wikiHow staff writer, Jennifer Mueller, JD. David Katona is an Immigration Lawyer and the Founder of Katona & Associates PLLC in New York City. With over 20 years of experience, he specializes in business immigration and green card sponsorship. He earned a law degree from American University Washington College of Law, a Master of International Affairs from American University’s School of International Service, and a BS in Business from Wake Forest University. Super Lawyers named him a Super Lawyer - Business Immigration in 2014, 2016-2022, and a Rising Star - Business Immigration in 2011. His firm was also rated by Best Lawyers as a Tier 1 immigration firm in NYC and Tier 2 nationally from 2020-2023. David is a member of the American Immigration Lawyers Association (AILA) and the NYC Bar Association.
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If someone you know is immigrating to the United States, you might need to write an affidavit letter – a written statement you submit under oath that the facts within it are true. There are several situations in which someone you know who is in the process of immigration may want you to write an affidavit letter on his or her behalf. Typically, you write an affidavit because you are pledging to support the new immigrant financially, or to back up the immigrant's claim that his or her marriage was made in good faith. You also might be asked to write a sworn declaration regarding facts or information about the immigrant for which appropriate legal documentation is unavailable.