"The U.S. Government is after your Pocket Knives! In a sneak attack, U.S. Customs has proposed revoking earlier rulings that assisted opening knives are not switchblades. The proposal would not only outlaw assisted opening knives, its overly broad new definition of a switchblade would also include all one-handed opening knives and most other pocket knives!"
This seems to get to the crux of the matter, from one of your links.
I carry a tactical folder everywhere i go. Obviously i'm opposed to this latest grab at one of my daily exercized freedoms.