需要通知移民局嗎?
-No. As long as they come back to US before the AP expires, it will be fine. But if they have overstayed (illegal stay) in US for > 180 days before they filed I-485, they can not leave US even if they have AP.
回美國是不是不需要申請簽證,
-No.
隻要中國護照和這個combo card?
-Yes.