At the time of making this declaration I am a bona fide resident of the State of ______. My place of abode within the State of.In this post, we'll explore examples of proof of US domicile and the documents required to establish proof of domicile. What do I need to provide to prove my claim for Florida residency? I have been a bona fide resident of the State of Florida since the day of. If you want to sponsor someone for a family-based green card, you need to provide proof of a U.S. domicile in your Affidavit of Support (Form I-864). This guide will explain how to prove domicile when filling out form i-864 affidavit of support. Download and complete the Declaration Of Domicile Florida (PDF) form.