I was born in the US and reside in the US. For many years while I was married I lived in Canada. My daughter was born in Canada in 1979. I went thru the process to obtain US citizenship for her. For a period of time when she was younger she lived in the US and went to school here. She attended university in Canada and has lived and worked there ever since. She is considering moving to the US again to live and work. She has a SS# but has never worked here. What is the process? Can she just move here and start working and living here or are there other considerations?