綠卡更新已經半年前遞交的,除了收到移民局的一封常規回執信,現在還沒有收到新卡,現在更新綠卡通常需要多長時間?
-Normally one to two years, case by case.
在等待新卡期間能否申請公民?
-Yes. Provide the copy of the expired green card and the I-90 receipt.
申請公民自己就可以辦還是需要請律師?
-It is very simple procedure, not need lawyer. Read this website carefully and watch the video there and follow the N-400 Instructions to file N-400 online or by paper:
Application for Naturalization | USCIS