回复：Please help, from H1B TO F1. How long time for USCIS to take

来源: 于 2009-10-02 13:28:55 [旧帖] [给我悄悄话] 本文已被阅读：次

Look up I-539 Processing time of your service center (CSC/VSC)
If start date on I-20 is in the future, USCIS can RFE you to asking proof that you are still in valid H1 working for H1 sponsor between the receipt date and I-20 start date.