我的经验

加拿大公民，Ｈ１身分。过去几年进出美国数次（飞机），我的经验

１）离境时，从没交Ｉ－９４，航空公司也从没问我要过Ｉ－９４
２）回美，航空公司check-in 时，只是show my Canadian passport, never ask me for US visa.
3) 入关时，show my Canadian passport and I-797A, the officer just took off my old I-94, and staple a new one with date same as on I-797A.
4) My I-94 doesn't have multi-entry stamp on it. The admitted stamp just show H1B and class until.