What are the issues concerning bringing a river knife across? I know they ask for weapons to be declared, but will they let it through? Are the rules the same for a Canadian entering the US as an American entering Canada?
Never declared it, as I consider my river knife (which is leashed to my PFD, so it won’t get lost) a tool and not a weapon.
Traveled with it across the border (both ways) at least a dozen times, never had any issues.
Why "bring a knife to a gun fight".
Recurve bows worked well in Deliverance.
Joking aside, as TGG stated, bringing river knives across the border isn’t an issue. Make sure your gear looks used, or some customs officer may want to charge duties.