多謝老師
假設我不renew綠卡，直接申請公民，大概多久能轉成公民？
-I don't know. Case by case.
在轉成公民之前假設我或換工作或出國，而我沒有申請renew綠卡，我有什麽辦法嘛？
-No. You must file I-90 to renew your green card in this case. You can get the green card stamp on your passport at the local USCIS Office by bring your I-90 Receipt notice, and use the green card stamp to travel and work before you get the renewed green card or US citizenship.
綠卡有延期之類的說法，比如說蓋一個章延6個月這樣我有充足時間換公民？
-You need to show the I-90 filing receipt notice to get the stamp (see above).
