回複:thanks, one more question

回答: 回複:B2 visa extension questions. Please helppjiang2007-09-14 08:19:13

When one leaves US, there is no Customs inspection. The I-94 is usually surrendered to airline as proof of leaving the country.

In your case, you may use air ticket/boarding pass when such proof is requested at a consulate or within US.

Please also look at here http://web.wenxuecity.com/BBSView.php?SubID=immigration&MsgID=310526

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