I'm imagining future federal funding negotiations will go something like this:
California: hmmm, hey DC, I have a problem with my federal funds allocation.
DC: Yes?
California: It seems to me that you have assigned me too little.
DC: I've assigned you more than enough.
California: Not at all, I demand more money, or I will secede from the Union!
DC: Very good.
California: What?
DC: I said that if you want to leave up the Union, that's fine for me. In any case, it is clear that you don't give a damn about the Union because YOU DID ABSOLUTELY NOTHING TO DEFEND IT!
California: Oh please stop living in the past, we are talking about MY needs NOW, not any fictitious grievances that only exist in your head.
DC: You are right, I have decided to reconsider your allocation of federal funds.
California: Yay!
DC: You will receive the generous figure of ZERO dollars with ZERO cents.
California: What?!
New York: I completely agree with DC.
States that suffered the Civil War: We too.