排期還沒到，如何讓家屬在國內follow to join辦綠卡，可以等綠卡批了後，家屬再申請follow to join嗎？
-File I-824 after you get your green card.
在國內好，還是在美國好 申請些？？
-If they can come to US first, it is better for them to file I-485 in US than you file I-824 for them to apply for the immigration visa in China.
