can I have two Green card?

來源: 於 2005-07-13 10:36:30 [舊帖] [給我悄悄話] 本文已被閱讀：次

I live in canada and work in US, waiting for US green card. should I file I-485 or CP in the future?? can I get canadian passport and keep US green card ?
Thanks in advance.