Canadian/US border

[David_Hayward (RIP)]

My son and I are fascinated by the satellite TV series on the US Border Patrol. The Mexican-US border is interesting but what about the Canadian border? We have seen an Alaska-Canadian border post with zilch traffic and the Windsor Tunnel post, where there seems to be huge queues all the time. Is this always the case? How long does it take to get through and do people commute? The nearest thing we have is the Channel Tunnel where you can be subject to checks in batches on the UK side, but then it can mean you can go straight on to a train. In reverse, on the French side there are French posts, then UK, then possible customs searches, and then you can get on...and queues at times!