I don't think so. There's no reason for them to do that. He has a waiver now so any past charges have been forgiven by the u.s government. Read my post above about the process. Allow plenty of time. Be respectful, honest and pleasant. Don't be stressed. It's fine. You will pass freely. Relax and have fun. My first time I was scared. I'm naturally an anxious person. The second time I got called in to secondary and they searched my car. I of course never had anything but I was so scared they would say I couldn't go to the states. Surely it was just my anxiety. They did a half ass search of my car. Turns out they were making sure I wasn't selling my car in the states. My day job I am a finance manager at a car dealership so that raised suspicion with the guard at the border but the guards inside were not concerned. Now I go weekly and I never have a problem. The American guards are way nicer than the Canadian ones. Put a smile on your faces and go! Let me know how it all goes for you.