回复：回复：回复：I485 field, question for leaving US

-Yes. You can use the H-1/H-4 I-94 to come back if you will return to US within 30 days.

请问为什么是要30天以内回美? 能呆长些吗? (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.