Hi, I'm a USC petitioning for my wife for a cr-1 visa at the US consulate in Sydey Australia. I'm having trouble establishing domicle in the states because Ive lived and worked here in Australia for the past 13 months. Before I came to Australia 13 months ago, I resigned from my job in New York and moved to my sisters home in Florida. But I only stayed in Florida for a week before I left for Australia. When I was in florida for that week I opened a bank accont there locally, but the account has since been closed for about 7 months now. That was not a concern for us as we had established an account here in Australia the first month I arrived.
We plan to move to Florida and find work there immediately. My sister in florida has offered to let us stay with her indefinitely when we arrive in the states and her husband has offered to be a joint sponsor financially for the petition.
The consulates info on the matter is very confusing, on one hand they need me to prove that I am living here in Australia for the past six months before I can petition for my wife, but they also state that a USC living abroad cannot be a sponsor

They say I must prove that I have maintained domicile in the states, which I sort of have done at my sisters home in Florida, but I dont know how to prove that. Also I have been in Aus. with a temporary(5 year) visa, is the fact that I have a temporary visa here prove I only intend on being here temporarily?
Does anyone know how I should go about all this domicile stuff? Please help, thanx