Why would you want to secede? Far more productive to call for maximum state rights with a Republican president, House and Senate. Should be difficult for them to resist that, seeing how they have been champion for 'state rights' for so long, and if you defund the federal government to the point of it becoming non-functional, California gets nearly all the benefits of independence and little of the acrimony that a secession would cause. Just ask for: - end of federal medicare, medicaid, education. - End of federal criminal law - right for states to determine who gets to live there (Republican states want to ban muslim refugees from coming in, why not ride that wave and claim a right for every state to allow or disallow any immigrant for any reason.) You could call them the 'Right to Live here' states, like you have the 'right to work' states. And of course, a corresponding drop in the federal tax rate if they don't have to fund all that stuff anymore. Accomplish that, and California is as good as independent (just like all the other states), without any of the nasty talk about actual secession and civil war and stuff.