有關出加拿大入境記錄

Less than a week spending in US, only by driving, is not considered as 'left' Canada.

If you stay longer than a normal short visit, like two or three months, no matter if there was a record on th border, you still need to count down the time. Any record, like credit card spending, car plate number scan at border, could create trouble later if you hide your time. Mount Police ramdomly verify your comment.