President Donald Trump, a vocal gun rights supporter, is seeking to fill a vacant Supreme Court seat and make the court more conservative, raising the prospect that it may take up more cases in coming years.
Alan Beck, a lawyer for the plaintiff in Tuesday's ruling, said he believed the question about openly carrying firearms would eventually end up before the Supreme Court.
"I think the Supreme Court is receptive to this," Beck said in a phone interview.
Judge Richard Clifton dissented from Tuesday's ruling, saying the Second Amendment did not preclude the sort of licensing rules used in Hawaii and elsewhere.
Laws on openly carrying firearms vary widely by state and type of gun. The most restrictive are California, Florida, Illinois and the District of Columbia, which generally prohibit people from openly carrying any sort of firearm, according to the Giffords Law Center to Prevent Gun Violence, a nonprofit policy organization that favors greater gun control.
Hawaii is one of 15 states that requires a license or permit to openly carry a handgun, according to the center's data.
In 2008, the U.S. Supreme Court ruled for the first time that the Second Amendment protected an individual's right to keep guns at home for self-defense.
The Second Amendment was adopted in 1789 and reads: "A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Reporting by Jonathan Allen and Diana Kruzman in New York; Editing by Tom Brown and Peter Cooney
Our Standards:The Thomson Reuters Trust Principles.