回复：回复：回复：让我去Local INS 按第二次手印，是

Once anyone did FP, INS has to keep valid one. So if 1st FP will expire, you have to do the 2nd FP. If 2nd FP will expires, you have to do the 3rd FP, and so on

That is why few people, who filed I-485 in 2004, get FP notice.