我在申请婚姻绿卡。已面试过，在移民局网站上已看到绿卡业已批准。绿卡将于60日内寄给我。目前有一封Notice 正在途中。我最近一周准备回中国，机票已在手上。我可以出境吗？还是需要得到移民局的批准？望老师不吝赐教。
-Two choices for you:
1. print out the I-485 approval information (e.g. email or online status) and hten, bring it with your passport to the USCIS local office to get the green card stamp on your passport, then use the stamp to travel. Tell the IO that it is urgent for you to travel and you can not wait for the physical green card.
2. Just go to China and ask someone receive the card for you and mail it to you in China. Then, use the green card to come back.
