thank you so much for your reply. I asked you questions about J-1 in here before and your reply was very helpful. right now my j waivor is in process,and hope I can get it soon.
another thing is you mean it won't cause any problem because i put "intend to arrival date" as october in 156 if my mom actually gets here in november, right? and also if my mom has only one way ticket, are they funny about it?