请教8老师：
- 我先生接到绿卡renew按指纹的通知。他在网上查到：有人说按指纹的同时移民局会在旧卡上贴纸条，表示新卡收到前，即使旧卡过期了，也可以用的。新卡一年后才收到。请问是这样吗？-Some USCIS ASC do this extension during the biometrics, but some don't. So, just ask them at that time.
- 如果移民局不自动贴纸条，我们要求移民局出证明：表示绿卡在renew过程中，我先生在renew期间还可以用旧卡来美。_if he cannot get the extension during the biometrics, he needs to call USCIS to allow him to make an appointment to get the I-551 stamp (green card stamp) on his passport to travel. 按指纹的预约时间是否会变?-Unless your spouse requests re-schedule, he has to go for the fingerprinting on time.
