Putting Texas in the same category as California and New York is ridiculous (I live in Texas, and most Texans would be insulted by the comparison).  Other than their large immigrant populations (legal or otherwise), their state-level politics couldn't be more different.  Your assertion of the US dividing into two countries could be true however, but it is along "Red State" and "Blue State" lines - that's the true schism confronting the US, and all the other fractures (racial, economic, etc) follow this pattern.