回复：母亲被拒签, 是否可以马上再次预约下次签证呢? 大概要多久才能在签呢?

My father was denied in Noverber in Beijing, the reason is he fotgot to take the approval notice of extension of stay in his last stay in US, issued by USCIS. then He took it next time, it was approved.

So don't worry, if denied, make sure to know why denied. and take those docs next time.

Good luck.