-Yes. You can use the H-1/H-4 I-94 to come back if you will return to US within 30 days.
請問為什麽是要30天以內回美? 能呆長些嗎? (assuming H1/H4 is still valid). Thanks
-Of course you can stay longer there, but if you are not a Canadian citizen, you need to get/use the H-1/H-4 visa to come back in this case, not the current I-94.
