Add Yahoo as a preferred source to see more of our stories on Google. The butterfly knife is at the heart of a controversy over Second Amendment rights. Butterfly knives are under fire in some U.S.

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.

An interactive butterfly exhibit has returned to the Pearlridge Center and is open for visitors, while you visit bring a ...

So the Ninth Circuit held today (Teter v. Lopez), in an opinion by Judge Carlos Bea, joined by Judges Daniel Collins and Kenneth Lee. The butterfly knife, also known as the "balisong," has a disputed ...

SEATTLE (CN) — The Ninth Circuit is again considering whether to return to a federal judge a Second Amendment case over whether Hawaii’s ban on the concealed carrying of butterfly knives is ...

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 ...

A new species of butterfly has been identified to the islands. University of Hawaii at Manoa Professor Dr. Daniel Rubinoff and researcher Dr. William Haines of the Department of Plant and ...

The butterfly knife is at the heart of a controversy over Second Amendment rights. Butterfly knives are under fire in some U.S. states. Michigan just joined a case involving controversy over Hawaii's ...