Hello, I'm currently visiting my girlfriend, and I have never been to niagra falls before. We wanted to drive there so that I'm able to see. we're just 2 hours away in Toronto. What I was curious about was if I drive across the U.S. border (I'm a US citizen) to see the United States side and I drive back into Canada would I be questioned if the IO even cares enough to ask? Of course I'd be nothing but honest with them about what's going on. But I don't want to take a trip there and then not be allowed back into canada.