As a rule, a person must reside in the USA (including the U.S. territories and District of Columbia) and also, to claim U.S. domicile, this person must intend to keep on living in the United States for the foreseeable future. It’s not a problem if you are planning to move to another state as long as you are still on the territory of the United States.
▪ If the sponsor resides and runs his business in the USA, the country of his domicile is the U.S.
▪ If the sponsor does not currently live in the USA since he is temporary employed, but still maintains his place of residence in the United States, and also plans to return home, the country of domicile is considered to be the U.S.
▪ If the sponsor lives somewhere overseas but really hopes to reestablish domicile in the USA no later than the date of the potential immigrant’s admission or adjustment of status, there is an opportunity for the sponsor to claim U.S. domicile. http://www.atlantanews.net/newsr/8726