因为新的10年探亲签证有效期, 想来美国办绿卡,但不知多少时间可以办下来,不知这期间可否以原来的探亲签证往返中美之间。 -After they apply for the green card, e.g. file I-485, they can not use the B-2 visa due to immigration intent, but have to apply for the advance parole to travel. 谢谢,节日快乐!