Calexit

[Yojimbo]

Found some economic data from a couple of years ago. California is 13.3% of the U.S. economy, next closest is Texas at 9.5%. Be a big chunk of the federal tax base if California left. Also, California would quickly form relations with Mexico and Canada, plus other South American countries and Asian countries. They wouldn't wither and die without the United States.

P.S. Also 12% of the entire country's population.