老师我的最近一次入境的I 94卡遗失了。但是I 797上的仍然有效。我能否用797上的出境？还是必须补办一张？两张的号码应该相同的吧？
-There is not paper I-94 anymore. You don't provide I-94 when you leave US. You of course need to bring the I-797 approval notice with you to apply for a visa (if necessary) and enter US.
You can find your I-94 at this website if you need it to extend your status or apply for green card:
https://i94.cbp.dhs.gov/I94/request.html;jsessionid=jrKBTZwBzpvQ57hFRxMXC1KDYzPQKR5FvyCTkcvQm5rMp8B71nx1!-887765640
-There is not paper I-94 anymore. You don't provide I-94 when you leave US. You of course need to bring the I-797 approval notice with you to apply for a visa (if necessary) and enter US.
You can find your I-94 at this website if you need it to extend your status or apply for green card:
https://i94.cbp.dhs.gov/I94/request.html;jsessionid=jrKBTZwBzpvQ57hFRxMXC1KDYzPQKR5FvyCTkcvQm5rMp8B71nx1!-887765640
