請教8老師:父母等待綠卡期間用AP回國了,現在綠卡批下來。但他們因事沒打算近期回來。請問能把綠卡寄回給他們下次入境時用嗎? -Yes, but if the green card is lost during the mail, it will be a little trouble. 還是一定得在AP到期前回來? -This is better. 沒在AP到期前回來綠卡會作廢嗎?謝謝!