8老師好
我姐姐（美國公民）2011年底為我申請了F4兄弟姊妹移民遞交I-130表格，後收到I-797C的確認，其上“RECEIVED DATE Jan 06，2012”，當時我兒子15周歲4個月。
直至目前，沒有收到任何批準的文件，現在看，還有5、6年才能排期到我們，屆時，我的兒子大約28歲左右。
我的問題：
1 他可以按《兒童身份保護法案》的相關規定，享有隨行子女移民資格嗎？
-Depends on when the I-130 will be approved.
The child's CSPA age = the child's actual age when the I-130 priority date is current (排期到時) - the I-130 pending date
Note: the I-130 pending date = the I-130 approval date (i.e. the approval notice issued date) - I-130 receipt date
If the child's CSPA age > 21, then the child is age-out and that means he cannot immigrate into US together with the parent (i.e. cannot use the immigration benefits as the drivative of the mother).
2 以上如可，他必須一直保持未婚狀態直至拿到移民簽嗎？-Yes. But if he is age-out, then it does not matter because he cannot use the benefits no matter whether he gets married or not in this case.
盼百忙中撥冗給予指導，謝謝。
