帮国内朋友问以下问题，谢谢啦！
1、EB5办理的投资移民遇到排期时，21岁以下子女的年龄冻结具体是什么规定？（是否526审批就开始冻结年龄？）
-The child needs to file I-485 or submit the immigration visa application (DS 260) when both the priority date is current and the I-526 is approved. Then, the child's CSPA age will be frozen. Of course, the child's CSPA age is temporarily frozen during the I-526 is pending.
CSPA age = the child's actual age when the priority date is current - I-526 pending time. If CSPA age < 21, then the child is not age-out.
2、如果面试通过并登陆后，主申请人由于主要工作在国内，只要一年去美国2次左右，每次居住时间大约在7-15天左右。会不会对转正式绿卡有影响？
是否建议在去过1-2次后申请办理回美证？
-Yes.
3、绿卡持有人在美国的常用通讯地址是否可以写亲戚或朋友的住址？
-Fine.
1、EB5办理的投资移民遇到排期时，21岁以下子女的年龄冻结具体是什么规定？（是否526审批就开始冻结年龄？）
-The child needs to file I-485 or submit the immigration visa application (DS 260) when both the priority date is current and the I-526 is approved. Then, the child's CSPA age will be frozen. Of course, the child's CSPA age is temporarily frozen during the I-526 is pending.
CSPA age = the child's actual age when the priority date is current - I-526 pending time. If CSPA age < 21, then the child is not age-out.
2、如果面试通过并登陆后，主申请人由于主要工作在国内，只要一年去美国2次左右，每次居住时间大约在7-15天左右。会不会对转正式绿卡有影响？
是否建议在去过1-2次后申请办理回美证？
-Yes.
3、绿卡持有人在美国的常用通讯地址是否可以写亲戚或朋友的住址？
-Fine.
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