請问8老師,父母是绿卡持有者,在中国住了几乎1年,刚回到美国。但是国内有急事,我父母需要回去一趟。请问该怎么做才能保住绿卡?谢谢
-They had better retunr to US within 3 months (not more than 6 months). If the CBP officer ask why they travel to China too often, just explain it. Don't sign Form I-407 if the officer give them trouble when they return, and insist to enter US even if thet have to go to the court (just in case, and probably it wont' happen).