-I do not think it will be helpful to file I-290B (only save some time but it is difficult to win)
如果我妈妈不回去,签证过期后等我入籍再给她申请green card (我不工作,要我老公作担保)会不会有问题?
-It should be fine as long as your family income can meet the requirement to sponsor your mother GC application.
多谢了!!!!!