Similar fears were expressed when immigrants from Eastern adn Souther Europe came to the U.S. Conservatives adapted and can do so again.
The difference is - in those days schools and society taught people how to be American. Today, the schools and other institutions are dominated by leftists who teach everyone that the USA is evil.
And it took a long time before ethnic groups voted Republican. A few years ago I read that it was only in the last election that a majority of Finn descended people voted Republican. They had moved here a century ago.
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Similar fears were expressed when immigrants from Eastern and Southern Europe came to the U.S. Conservatives adapted and can do so again.
Dream on. Immigration is having an enormous impact on electoral politics. For example, California will never vote GOP again and its 55 strong congressional delegation will become more Dem. NV, Colorado, NM, and AZ are or will turn purple and then blue. Here are some facts, not speculation about what is happening:
Immigration, Political Realignment, and the Demise of Republican Political Prospects
Here in VA, a state turning purple, immigration is playing a significant role. This year, Fairfax County, the largest in the state with over a million people, will have its Presidential ballot in both English and Spanish, a first. 28% of the county is foreign born.