This fellow makes a pretty good historical case, but we have one condition today that is different and relevant. The Latino population in the USA is far larger and growing rapidly and there is no proof or record that they will ever vote republican in large numbers. I think this trumps the author’s position and clearly predicts the near (5-10 years) future.
I was thinking that the primary difference, today, is that "the economy" is different for the takers, who vote for the government givers (the DEMs).
"The economy," for that voter, is not whether or not a job is coming, or a rising tide floats all boats. That voter is self centered, and is sensitive to promises form more handouts, better care, etc. As long as the DEMs can blame the GOP for failing to handout, the takers will rule.
This was predicted long ago, and is a historically repeating pattern. It is the reason democracies always always always fail.
Not according to the author of this piece, Jonathan V. Last, which is linkrd below. Last also said on C-Span's BookTV last week that the fertility of Latinas in the USA is also dropping fast.
The result is that from 2005 to 2010, the U.S. received a net of zero immigrants from Mexico...
Michael Barone also wrote within the last year that net migration from Mexico was zero. It's our booming economy, not. The number coming is the same as the number going home. IIRC, Mexico's annual GDP is about 5 %.