Is the 30 day rule still in effect between Canada and US?

来源: 于 2009-06-30 10:27:05 [旧帖] [给我悄悄话] 本文已被阅读：次

I have a valid H1b approval notice. If I visit Canada only and come back in 30 days, I don't need a visa stamp from USA. Is it correct?

Thanks,