Heres the thing, there will be no CWII
If the world and investors believed that a state (or states) was potentially going to secede from the Union and the United States could actually break up, the economy and the dollar would collapse so fast that panic would ensue and city Liberals will turn on each other and burn their own cities down
There would be so much chaos that Obama or Hillary or whomever wouldnt have the ability to stop the secession.
Though secession might be pointless after that as there will be so much bloodshed, Liberals would have thinned much of their population out. Rural Conservatives meanwhile would have just passed the popcorn and waited it out and can come back in and pick up the pieces.
More 1776 than 1861, IMHO.