You'd also need high level US military leaders to go insubordinate, voluntarily ignore their chain of command, and "donate" the assets of the US armed services to the Republic of California.
Texas is the only state that could probably put up a fight, but it'd be very ugly and very bloody.
Secession almost always equals war.
I think the folks advocating for secession trivialize the fact that the end result is armed conflict and not knowing which side your neighbor is on.
And Brexit is not precedent whatsoever -- Britain can exit from the EU because there was no large amount of shared military/defense assets based within the UK, and the EU is primarily an economic cooperation effort.
I suspect that the federal government would try to negotiate a secession that gave them some power over the newly formed nation, in order to "give the people what they want" while maintaining the status quo as much as possible.
It's a pipe dream. You can't win a war with a bicycle and a baseball bat. Montana could probably win a war of secession, but this ain't Montana.
Ironic reversal, but you're 100% correct.
It is much more likely that the federal government would try to put strings in place so that it could act as a puppet-master for the newly "independent" nation.
Personally, I would not want to live in an independent California. I love everyone's good ("bleeding heart") intentions, but our legislative system seems fatally flawed.
Never mind what Lincoln knew... if one goes, the union will wall.
Sure, they could do that, but it's hard to take any sort of moral high ground or project strength on the world stage when you are forced to militarily occupy your own country against its will.
That said, I doubt any states are realistically going to secede, but at least Texas won't be the only ones constantly going on about it now.
The thing people forget when talking about secession is that unless the constitution was explicitly written to make affordances for future secessions, every attempt at secession is illegal and can be considered an act of civil war.
Aside from "voting irregularities" one of the major talking points when the Crimean peninsula voted to secede from Ukraine and be annexed into Russia was that there was no legal basis for them to do this, even if the elections had been undisputed.
Slavery.
Interestingly the way people outside the US are taught about the American Civil War is far more nuanced: state rights, economical reasons, sovereignty, etc.
But I guess "the North declared war on the seceding South because the South was literally worse than Hitler" is a valid interpretation too. Teach the controversy, right?
Division is a dangerous thing. The us at large might not have a choice.
My friends from Long Island don't know a single person in the military. Not 1. That does not bode well for them in a theoretical war of secession.