请教小白兔和PJiang等大侠:about I-94
I have a I-94 with "Multiple entries" on it. I got it when I entered US from
Canada with Canadian passport. Now I have a trip to Europe. Do I need to
return the I-94 to the Airline when leaving. Can I keep the "multiple
entries" I-94 for reentering US from Europe.
Thank you