同時我也很懊悔當初沒遞綠卡申請前還是H1B時為什麽沒辦adoption。現在剛綠，要他簽證可能隻能是B證了。8老師，B證可以象H4那樣一直待在美國嗎？
-No, if he appy for F1, that will be OK.
假設6個月過期後讓他“黑”了，等2年期一到就申請綠卡，移民局會因為他黑了而拒絕給綠卡嗎？
-If he “黑”, he can not file I-485 within US, but he may apply for the immigration visa in China. He is not subjected to the 3- or 10-year bar even if he “黑” for > 180 days or one year before he turns 18 years.
If you (green card holder) sponsor him green card 2 years later, it still takes about 3 years for the priority date to be current for him to get the immigration visa. So, totally it may take 5 year or more for him to get the green card. So, if he “黑” and if he is not qualified for the immigration visa application before he turns 18 years old, he needs to leave US and wait in China for the priority date to be current to apply for the immigration visa in China.
