Honestly, the US is probably going to be balkanized (what an irony it'd be if Yugoslavia remains united and it's the US which becomes the shorthand cultural reference for a former unitary state that breaks up due to internal pressures). We'll probably see the California Republic and the US Remnant, plus some kind of Libertarian state in the Mid-West, and then an independent South. The mid-Atlantic states will probably be some kind of US*/UN/USSR/EU administered zone, since they've been the ones hit hardest by the CV's and the likely fallout from the CSA.
Americanized