That is not a 100% accurate statement...I’ve had a DUI for over 3 years and I’ve travelled to and from Canada at least 8-10 times without any issues. Initially, I was scared to cross the border solely for the reason you mentioned...but after talking to a few others in the same situation and learning that they didn’t have any issues, I took my chances. Seems like they might utilize a risk factor along with your driving/criminal history...or maybe solely at the CBP agent’s discretion.

Had a coworker that found that out the hard way. Got a DUI and didn't tell anyone. Then one day a few months later had a work trip in Canada. They stopped him at customs in Canada and shipped him back. Company had to fly someone else out there on short notice.

Still better than the coworker that flew to Canada on business and then while on the trip his name got added to the "NO FLY" list. That was a fiasco.

Yup. We have a group of people who regularly camp the Boundary Waters Canoe Area (BWCA) on the Minnesota side of the boarder. We started doing trips where we would paddle to the Canadian side into Quetico - and found out one of the guys had a DUI when we did the boarder crossing. Had to cancel that part of the of the trip... and add some difficult questions for folks on the subsequent trips.