我绿卡今年6月过期, 我已经在境外呆了7年,从没回过美,. 请问我如果再次入境是否必须放弃绿卡?
-Yes. Go to the US Consulate to give up the green card (fill out Form I-407), and then you can apply for a non-immigrant visa to enter US.
我能否用澳洲护照入境(六月份有个会议需参加.)?
-Yes.
谢谢!