If California broke off I'd say Good Riddance. The same goes for NY, MA, CT, RI, NJ, MD, DE, DC, CA (Gun Hating States -- All Over), OH, IL, WI, MO, KS (NO CCW), IA, MN, NM, OR, and WA. Unfortunately the 3 havens VT, Southern NH, and Southern ME are stuck in te middle. I would expect a VT, NH, ME Section that would remain part of the U.S.
IF Florida borke off I'd defend her the same way my ancestors defended Tennessee, Alabama, and Georgia during the War of Northern Agression. But first we'd have to get rid of the liberal cesspool in SE Florida.
As for Texas, it was once its own Nation Prior to Annexation. It broke off of Mexico and formed the Republic of Texas which spread from the Mexican broder north to Wyoming and encompassed alot more than current day Texas. I wouldn't be suprised at all if TX broke off and reformed the Republic of Texas. I definitely wouldn't fight against them.