I remember reading a book decades ago called The Nine Nations of North America. The book did not predict the end of America so much as point out the obvious. America is rather hopelessly divided into rather obvious sections. This was self-evident to me at the time as I had not too long before moved from California to Missouri. I had been asked by a truck driver rather pointedly, "Where you from, Boy?" I was in northern Arkansas at the time. 

With that in mind here is one future map of a possible future US:

The breakup of many countries does seem inevitable. Spain is particularly vulnerable. One thing that is holding back such separatist fervor is the huge debt of these countries, but if that debt ends up repudiated ...

An interesting question that is not particularly important now but may be later is one that you may need to ask yourself. 

"Where you from Boy?"