绿卡持有者想在国内呆一年多时间,需要申请白皮书,请教:
1)是否必须回美国申请?
-Yes.
2)递出申请材料后,需要等多久可拿到白皮书?才可回国。
-May take 3 months, normally. But you can leave US after you do the fingerprinting.