Hi, my mom is a green card holder and due to the family emergency she needs to travel back to Russia. She plans to stay in Russia for about 5 month then return to USA. After she comes back to USA, for how long she should stay in USA before she can go back to Russia? Please advise.
There is no bright line test. If she plans on being out for an extended period of time she should apply for a reentry permit. This will allow her to stay out longer than 6 months without abandoning her residence. I generally tell peope they should stay inside the US for at least as long as they were outside the US. In your example if out for 5 then in for 5.