我去年h1b 期間開車去了加拿大幾天，可是回來入境的時候沒有換i94，海關就讓我進來了，護照和i94上沒任何記錄和蓋章。現485要求補充材料證明最近入境的時間，請問我怎麽證明呢？謝謝！
另外，我的加拿大簽證是從2013 到2018，上次入加拿大時加拿大海關蓋章蓋了2011年，我後來才發現，同行的幾個家人都蓋錯了。但主要是入境時沒章，怎麽辦？非常感謝！
-It seems you used this entry as your last entry to US in I-485. Thus, USCIS always ask you to provide the evidence such as I-94 and you don't have it because you used the automatic visa validation rule. You may go to the local CBP Deferred office to see whether you can get the I-94. If no, you may just explain it in the response letter that you didn't have a new I-94 for that entry because you used automatic visa validation rule.
