There is a desire among right wingers to increase the white birthrate substantially, not only to overcome the population decline that will come with expelling practically all immigrants of color (and, bonus, their American citizen children), but also to attack women's advances in education and employment, doing all they can to force women to stay home and pump out three, four, five, or more babies—just like when America was "great".
I know many people here think the confabulating right wing elites we see tweeting fire and brimstone all the time are stupid and ignorant and couldn't plan or strategize their way out of a paper bag, but I do believe they understand that by degrading the educational system, they can create a system in which far, far fewer students move on to college, and far, far more high school graduates (and, just as importantly, dropouts) can make up for the loss of immigrants populating the manual labor jobs.
A less-educated workforce is a more blue collar workforce, and the more less-educated people the right wing elites can engineer, the better they can fill those lowest-paying of jobs with American citizens.
Couple that with killing off unions for good and repealing labor and minimum wage laws, and we can get back to a country in which something like 88% of the men, women, and children who make up the labor force are manual, industrial, agricultural, domestic, or otherwise unskilled, and the remaining 12%—the educated professional and business class, which the right wing elite brainiacs assume will include themselves—can live very, very well off their backs.
You know—Make America Great Again.
It'll take time, maybe a couple or three decades, to see the fruit of their efforts, but if they can drive Democrats and other liberals entirely out of the body politic, as they will also seek to do by any means possible, they stand a good chance of achieving this version of the American Dream, at least in part.