也想借机请教一下8老师，像这种Follow-to-join 的亲属移民，广州领事馆一般可以保留几年？是三年以上就不可以了吗？
-If the applicant (derivative) has filed DS 260 immigrant visa application to NVC, normally it works for one year, case for case, depends on the USA Consulate. So, you need to contact the US Consulate to see whether the case is still active.
If the applicant (derivative) has not filed DS 260 yet (or the case in the US Conslate was closed-not active), then the primary beneficiary needs to file I-824 to USCIS for the derivative to do following to join and in this case, the primary beneficirary can file I-824 any time (i.e., no time limit).
