You can just show up at the border with your license / ID. If you have a passport they can look it up in the system. No fine, maybe a little lecture. Happens 10

You can just show up at the border with your license / ID. If you have a passport they can look it up in the system. No fine, maybe a little lecture. Happens 100s of times a day as lots of people are still not aware that you need a passport for re-entry (used to be just a DL until a few years ago).