Bank
Crossing into BC, Canada from Sumas, Wa is there a bank to exchange some $ for loonies before getting on TransCanada 1.
Forum Discussion
The shopping center noted by Tee Jay above is probably your most convenient stop to make the money exchange. Now is a good time to get extra CAN dollars as the US dollar goes much farther than usual. So you'll end up with some spare change which you can save for future trips to Canada which I'm sure you will want to do again someday since it's a great place to visit and people are super up there! And I'm sure you will enjoy Hope as mentioned above.
