should I turn in I-94 form when I go to canada

来源: 于 2008-07-03 12:19:22 [旧帖] [给我悄悄话] 本文已被阅读：次

I am going to Canada by airplane to apply for a US Visa (H1b) stamp. Should I turn in my I-94 form in the air plane? How about the old I-94 forms?