Hello,
My STEM OPT was approved on December 8, 2017 and the card was dispatched on December 12, 2017. However, the card was returned to USCIS as undeliverable on December 26, 2017. I have put up a service request on December 28, 2017 to resend the card and got a reply on Jan 2, 2018 that I will get the card within 30 days.
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I had to travel to India urgently because I lost my mother. Now, I have not yet received the card.
Q1. Can I return to USA with I-797 receipt that mentions the case is approved with Valid From and Expires On Dates and I-20? or do I have to wait until I receive the card?
Q2. If I have to wait, how long can I stay outside USA on Stem OPT?