I don't get this.
are they trying to say carrying a knife with a thumb stud over the border is not legal now?
can you ship them to/from canada?
can you carry one at all, even within the US, never mind the border?
please explain.
Here is my take on what this is all about:
First, the agency in question is in charge of deciding what knives can be
imported by foreign manufacturers.
There is a standing prohibition on the importation of the classic "switchblade" knife, as we know it, a knife with particular characteristics such as a stiletto style blade and a blade that can be deployed using spring action at the push of a button.
In the past, companies which import knives have applied to the agency for permission to import knives with certain features such as a spring assisted opening mechanism, but features distinct from a classic switchblade design such as a thumb stud rather than a button on the handle of the knife. The CBP has allowed the importation of most of these types of knives.
Now, though, the CBP is proposing a change to their governing regulations which would make it more difficult to import knives that have mechanisms which open the blade using spring assist, or inertia, regardless of how similar they are in function to the classic switchblade. This is a proposed regulation, it hasn't yet happened.
They have set a date (June 21) for public commentary on their rule change, and they have thrown out their previous decisions on which knives may be imported. Previous decisions provided precedent or guidance for those who wanted to import knives.
This could have an immediate effect on knife imports. A more long-term impact is that many state and local bodies of government (not to mention federal) in the US look to the policies of these agencies when drafting legislation, because they mistakenly believe that these agencies have some kind of "expertise" on these issues.
As many other countries have implemented pretty draconian restrictions on what their citizens may carry/own in the area of knives, it is certainly reasonable to believe that the US could move in a similar direction, and this proposed ruling by the CBP seems to be just that.
Hope this helps.
Andy