I-485 交上去, 是不是可以不申請B2延期? yes
拿到綠卡以後,是否每年要在美國呆半年? not really, at least for the first couple of returns they should be fine.
拿到綠卡以後,是否每年要在美國呆半年? not really, at least for the first couple of returns they should be fine.