今天刚收到 asc appointment notice, 说是“capture your biometrics",是打指纹吧? -Yes. 具体要准备什么吗(除拉带护照,photo id 和这张信)? -Only need the appointment notice and your ID. 打完指纹还要多久才有可能拿到绿卡阿?-Don't know, case by case. 非常感谢!