US Visa

SIGMARA

Do I have to enter US within certain date to keep my US visa valid? Like the Canadian Landing Paper?
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8 [. S: B! |2 k4 Z- }9 {6 U& K+ lI did not see that on the visa. Or maybe I missed it.
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风吹草动

应该不用。我是2010年8月签的，2011年12月第一次去的。

SIGMARA

Great to know. Thanks a lot!