Hi all:My 10-year green card will expire this November. If I will travel to Canada for a week this August, can I return U.S. with my current green card without problem? In other words, must I have 6 months validity for the green card to travel outside U.S.? Should I renew my green before my August trip or after the trip? Any risks I need to know before making the decisions. Any suggestions will be appreciated.
Faye

记得到期前六个月内就可以去办新的。在新的绿卡寄来之前，移民局会在旧的绿卡上盖章延期六个月。

回复 [url=http://forums.huaren.us/showtopic.aspx?topicid=2410158&postid=80279040#80279040]2楼elisay的帖子[/url] 我可以用旧的绿卡八月去加拿大吗？那时有三个月旧卡才到期。我 必须在八月出国行程前到移民局盖延期章吗？ 我印象里是绿卡可以不必保持6个月的有效期， 护照则必须。 我的理解对吗？