It’s ridiculously easy to get back into Canada from the United States, it seems, especially for a Canadian citizen.
“Where do you live?
“What were you doing in the States?
“What are you bringing with you?
“Any alcohol, tobacco, or controlled substances?
“Any weapons or firearms?”
Meanwhile, the guy is processing my passport in a reader. The whole interaction was under 20 seconds. Efficient enough, it seems.
When I entered the US on F-1 status, on the other hand, baggage had to go through an X-ray machine, questions were asked about fresh produce (why does that even matter), officers grilled other people for a long time, and the overall trip time gained about two hours from the border.
I don’t think there’s any difference in effective border safety/security on the two sides of this bridge.