A small boat chugs across the water under a thick blanket of fog. Wallace Pond straddles the US-Canadian border, with about three quarters of it north and one quarter south. Much of the border between the two nations in this area is on the "honor system"; there's even a road -- the aptly named "Canusa Street" -- where one side is in Beebe Plain, Vermont, and the other side in Stanstead, Quebec.