非常感謝!
最後一個問題 - 是不是理論上在律師file 485的當天他回到美國，隨後第二天(甚至當天)就可回加拿大？
-No. He has to wait for a few days (had better one week) after the lawyer mails out the application using overnight delivery. Thus, USCIS can put his information into the system before he leaves US. Otherwise, his I-485 will be invalid.
他現持有有效的H4，在美加之間的開車進出會有記錄嗎 (他的學校離邊境很近) ?
