However, due to the stigma around butterfly knives, few were being made in America ... He envisioned a large operation with machine-precision parts paired with hand-assembled finished products.

Lopez. The case involved a challenge to Hawaii’s absolute ban on possessing butterfly knives, a type of small knife with a bifurcated handle that folds upward to cover the blade when sheathed.

A conservative panel of federal judges ruled Monday that a 30-year ban on butterfly knives in Hawaii is unconstitutional under the U.S. Supreme Court’s new “history and tradition” standard ...