请教列为大人,有美国签证回国经美国走,可是从国内经美国到加拿大签证有效吗?

Is the so-called visa you have "a boarder crossing id" betwen CAN/USA? If it is, you cannot.
 
It depand on what kind of VISA you issued. One time or multiple.

最初由 datamine 发布
多谢!!
 
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