I will have to mention Phyllis Schlafly, William F. Buckley and the many others in the modern conservative movement that I remember from the 1950s and 1960s. Maybe not one of them ever said "borders, language, culture" but their issues included borders, language, and culture.
In the 1960s law ad order (law'n order) was consider code words for the N-word. I've heard some try that same crap today ---
oh, and looting was considered retrieving layaway items; e.g., the racist white store owners were over charging the victims so all the looted goods had been paid for.
Let’s not forget Pat Buchanan and his many books which scream borders, Language, Culture!
Buchanan has been warning about the Mexican invasion and Globalism for years.
Plus I’ll add Paul Weyrich, John lofton, Howard Phillips, Alan Keyes, Robert Welch, Larry MacDonald etc. All talked about and fought against Globalism and One World government.