Alaska is probably the most doable case, since they can see Russia from their house
California and Alaska, if you can convince Oregon and Washington I will try and get British Columbia to join.
Let’s take over the West Coast and tax the shit out of any imports from China that need to cross over to get to the rest of Canada and the US
NCR!
Why California?
Large, wealthy, lots of resources, politics somewhat different from national average, history of independence and strong state identity.
Basically the same reasons as Texas. There are actually some pretty significant shared cultural elements though people get angry if you point this out.
To add to the other answer, good agriculture as well. They can handle feeding themselves just fine. But they’d have to take AZ with them as well or else be able to negotiate like hell else SoCal won’t get any more water from the Colorado. AZ would not join CA willingly.
Arizonan here, I’d support AZ going with Cali just to see all the idiots who think Californians are ruining Arizona lose their damned minds
Same, that’d be mighty entertaining