This is incredible. I don't know who writes the postal regulations, but if a product is legal, it ought to be mailable, and that includes firearms. The judgment against Spyderco was unjust and is indicative of the type of government that the founding fathers warned us to avoid. It's a shame, really, when we realize that our own government has become the master and we are but the servants.
It may just be a matter of time before tactical knives come to the attention of the government. They're much more rugged than switchblades, they open as quickly, and most of the time the people who use them are entirely responsible in their use. In short, I wonder why they're not already banned.