Question towards I-94

Quick question: when depart U.S., it's required to return the I-94 to USCIS/INS. But which one is to be returned?

1) The white one stapled in passport when entered the U.S. port several years under F1 status, or
2) The I-94 at the bottom of the I-797?
Or both?

Thanks a lot!

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dragonfly 的头像

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匿名天使 的头像

Just photocopy both to keep your own record, the turn in both. No use to keep them any way.