I misspoke. I should have said more like Sonora or Chihuahua.
I figure that because to the current size of the Hispanic population in Texas and the disparity in birthrates between Hispanic and White populations. With in a few years, the majority population in Texas could well be Hispanic.
What you really should have said was Switzerland, Austria, or Hungary. The plains states have an educated workforce, a prosperous economy, and a robust infrastructure. Lack of a seaport is absolutely no barrier to independence. We can import and export through existing ports regardless of which country they are in.