I’m gonna go on a rant. Bear with me....

Fucking Canadian laws. As of 2018, most pocket knives can’t be imported into Canada unless you have some kinda business license (like ones for firearms). Not restricted to carry within Canada itself, but restricted to import or carry into the country.

The idea is you can’t import knives that can flick open or can easily be opened by one hand. Basically centrifugal knives and assisted/automatic opening knives. Ok, fine. But apparently Canada Customs/Border Patrol can seize any folding knife as long as it can flick open, even if having been manually opened halfway or 2/3s. How crazy is that? The law is so vague that the above could include basically every folding knives!

The basic section that allows the seizure:

2. In accordance with subsection 84(1) of the Criminal Code and the CITT’s recent decision in T. LaPlante, the CBSA resolves that centrifugal knives will be classified as prohibited weapons if the following conditions are met:
a. a knife has a blade that opens by centrifugal force, when the blade is released from the handle into the fully ejected and locked position with a simple and brisk outwardly flick of the wrist; and
b. it includes knives that require some preliminary or simultaneous minimal manipulation of either a flipper or other non-edged parts of the blade.

Asked to clarify the rule and the answer basically supports the virtual ban of folding knives:

Asked to expand on the CITT decision of the definition of knives that open with centrifugal force, CBSA Senior Communications Advisor Barre Campbell said, “This means any folding knife is not permitted for import into Canada where the blade can be extracted and locked into place with centrifugal force when, prior to use of centrifugal force, an item on the blade — such as a stud, disc, or flipper — or a hollowing in the blade is used to partially open the blade.” - Oak