A three-member panel of the 9th U.S. Circuit Court of Appeals, acting on a lawsuit by gun owners, earlier this month struck down as unconstitutional a requirement by San Diego County that residents show "good cause" to carry a concealed firearm.
In a 2-1 decision, the panel found that San Diego county's rules, coupled with a California state law that largely bans the open carrying of firearms in public, effectively barred residents from carrying a gun altogether, in violation of the Second Amendment of the U.S. Constitution.
Lawyers for both sides agreed that the panel's ruling, if upheld, would force cities and counties across California to issue permits to anyone who sought to carry a concealed weapon for self-defense and met the other requirements under state law.
San Diego County Sheriff Bill Gore has since said that he would not pursue further appeals in the case. But on Thursday, Attorney General Kamala Harris filed a petition asking the full 9th Circuit court to overturn the panel.