Both documents must contain the individual's name and residential address. Mail the form directly to the nonrelative.Include a self-addressed, stamped envelope. Save at least 2 printed documents to prove your residency. 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). We are selling the house and going full-time! To establish a new domicile, you need 1) a physical presence, and 2) a truthful, concurrent, intent of making the new state your permanent place of abode. There are five stages for application submission. 1.