是移民局要求的嗎?美國考雅斯----I don't think so. If you are studying or working in USA, you don't need to 考雅斯. All this is to prove your English.能加快審理速度嗎?---No還有,辦fbi的無犯罪證明需要多久?--It take time. used to be at least 3 month.