A new weapons ban has already begun

They aren't just coming for your guns, now they are coming for your pocket knife too! The Obama Administration's Customs Service has quietly proposed withdrawing earlier rulings that defined knives that were able to be opened one-handed, such as knives with thumb studs or other opening-assist devices as "switchblades" and are no longer importable or transportable across state lines. This change has a domino effect because most state knife laws use the federal definition of a "switchblade" to define what knives are legal as well. This affects 80% of all pocket knives sold in the US.

H/T Alphecca and The Volokh Conspiracy