The federal judges' ruling, which may be appealed, has implications beyond Hawaii, including in California and other states that also ban or severely restrict butterfly knives. Above, a youth holds a ...

State bans on weapons such as butterfly knives, pictured, and billy clubs are under new legal scrutiny as U.S. judges weigh a 2022 U.S. Supreme Court ruling that radically shifted 2nd Amendment law in ...

The U.S. Court of Appeals for the Ninth Circuit has held that Hawaii's ban on "butterfly knives" violates the Second Amendment, finding the pocketknife-esque blade falls under the definition of "arms.

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 for ...