I also agree with Ansell 12 that unchecked immigration not only means the end of the Republican Party but the death of conservatism.
If one accepts the author's dichotomy in the Republican Party between the Rockefeller wing and the Reagan wing, one could easily make the argument that country club Republicans, who see America mainly as a corporate vehicle to ride in the rush toward globalization, are utterly unmoved by Reagan's insight about the lethal danger of unchecked immigration.