There is no way to speed up your green card process after your marriage with a permanent resident. Currently, it takes 2.5 years. Unless your spouse will become a citizen. Then you will be able to get your green card almost immediately (in a few months).
You do not have any restrictions to leave the United States - you can do that at any time. The possible problem - how to come back here. As I said - if you would have a multiple-entry student visa in your ukrainian passport, you wouldn't have to worry about anything.
Marriage with a green card holder does not give you any immediate rights to stay in the US or to travel to USA (until your immigration visa number will become available - in 2.5 years). Until that time, you must have a valid non-immigrant visa (student, work, etc.), in order to return back to the US. |