Welcome to the lovely United States. ;) Since 9-11, border security, especially returning to the US, has gotten extremely paranoid. At all three spots between M

Welcome to the lovely United States. ;) Since 9-11, border security, especially returning to the US, has gotten extremely paranoid. At all three spots between Michigan and Canada (the Ambassador Bridge, the tunnel, and the crossing in Sarnia), everyone is stopped and questioned by border agents if they don’t have some kind of automatic pass that requires clearance ahead of time. You’re asked a lot of questions, like where you’re going, whom you expect to see, how much money you have, how long you expect to be there (in Canada; probably similar for visiting the US), etc. Going into Canada seems to be easier, although it really depends on how that border agent is feeling that day. All of my times so far have been relatively painless: “Why are you visiting?” <I state reason> “Oh, okay. Enjoy Canada!” It’s a crapshoot. Sometimes they search your car. I have to say, I do miss the Schengen area. Going from the Netherlands to Germany was a breeze.