Gov. Gavin Newsom wants to limit where people can carry concealed guns after multiple mass shootings left dozens dead across the state in January, calling for more restrictions in a state that already has some of the nation’s toughest gun laws.

He endorsed legislation Wednesday that would ban people from carrying concealed guns into churches, public libraries, zoos, amusement parks, playgrounds, banks and all other privately owned businesses that are open to the public. The rule wouldn’t apply if the business owner puts up a sign that says concealed guns are allowed.

It would also ban anyone younger than 21 from having a permit to carry their gun concealed and would require all permit holders to have more training, including on how to safely store and transport guns.

Assemblymember Joaquin Arambula (D-Fresno) told GV Wire: “SB 2 has just been introduced. I will evaluate the bill as it moves through the State legislative process.”

Supreme Court Struck Down CCW Restriction

California and half a dozen other states previously had laws that required people to give a reason if they wanted to carry a concealed gun in public — like citing a direct threat to their public safety.

But a U.S. Supreme Court ruling last year struck down those laws, making it easier for people in those states to get a permit to carry a concealed weapon.

California Democrats tried to pass new rules last year — and they would have succeeded, had it not been for a strategic blunder requiring a two-thirds vote of the Legislature so the bill could take effect immediately. Democrats could not round up enough support, and the bill died.

Newsom and legislative Democrats vowed to double down on passing a new law this year. Their cause came with renewed urgency, after mass shootings in Monterey Park and Half Moon Bay left 18 people dead and 10 others wounded. In total, the state had six mass shootings in January and at least 29 people were killed.

Republicans Say More Laws Aren’t the Answer

Assembly Republicans criticized the legislation.

“Gov. Newsom is sticking with his MO of deflecting blame for his record on crime with a press conference today to announce yet another piece of gun legislation,” the caucus said in a news release.

“Another set of restrictions on top of California’s 100+ existing gun laws is not going to make a dent in the wave of violent crime washing over our state. Enforcing our existing laws will. But that’s not as exciting to Democrat primary voters.”

(GV Wire contributed to this article.)