PJIANG老师: 今日同时收到I485 approval notice (me, my wife and my son, 13 year old) 以及me and my wife 的绿卡。 孩子从未指纹检测。 请问是否必须指纹检测才能得到real card (although it was approved)? 我该怎么办? 谢谢PJIANG老师。