California bill would ban all plastic shopping bags at grocery stores

"It shows that the plastic bag ban that we passed in this state in 2014 did not reduce the overall use of plastic. It actually resulted in a substantial increase in plastic," Blakespear, a Democrat from Encinitas, said Thursday. "We are literally choking our planet with plastic waste."

As San Francisco's mayor in 2007, Newsom signed the nation's first plastic bag ban.

Read at ABC7 San Francisco