They also need to investigate this woman's life in Poland to see if there is any suspicious activity there. There might be a similar pattern of behavior.
Anyway, if she is not a legal citizen of the United States, then she should not be given custody of her husband given the suspicious circumstances. If I were this young man's mother, I would get him the heck out of Florida.
I don't know enough to comment about the illegal status of the wife and deportation issues.
What does come to mind for me is that if it were my child it might not be financially possible to pick up and go. There also may be restrictions placed by the court.