父母綠卡後在中國呆了二年多,綠卡失效。
若必須先辦理放棄綠卡必須本人去北京辦嗎?家住東北
-Yes, but they can do it at any one of the US Consulates in China, such as in Shenyang.
另外407上什麽原因放棄綠卡如何回答。謝謝
-May just say something like "I am not used to the living environment in US, and plan to return to China.", etc. It does not matter too much, anyway.