Yes. I know this rule. I was asked to provide the proof for the most recent time to enter USA. Does it count for this case (back USA from Canada)? If yes, how can I provide proof. Thanks!
"訪問加拿大30天之內,不換I-94,不蓋章". = 你的3天加拿大之旅不算出境。It does not count for the most recent entry.
"provide the proof for the most recent time to enter USA. " = 你的3天加拿大之旅之前的一次出境。