You've got to be fucking kidding me. California has never had anything remotely close to a serious secession movement.
Besides being the first state to secede during the Civil War, South Carolina actually threatened secession in 1832 as well due to tariffs, and got Jackson to back down.
They've been here before...
http://thegatewaypundit.com/2018/04/south-carolina-legislators-introduce-bill-for-secession-if-feds-begin-seizing-legal-firearms/