The 5th U.S. Circuit Court of Appeals recently ruled as unconstitutional a federal law that bars people with a restraining order for domestic violence from having guns.

Arizona is among more than two dozen states now urging the U.S. Supreme Court to review the case.

The Arizona Attorney General’s Office says that an abuser is five times more likely to kill their partner if there’s a gun in the home.

Yet the 5th Circuit found that a federal law aimed at keeping guns away from people under restraining orders for domestic violence tramples their constitutional right to own one.

Kris Mayes is among the attorneys general worried that the ruling could neuter similar state laws, which they say are in-line with the Second Amendment.

The group writes that if the 5th Circuit ruling is not reversed, it will interfere with a key tool used to protect domestic violence victims, and needlessly jeopardize public safety.