The alt right is all into deporting a hundred million Americans who are not "Heritage Americans", but they do not define it. Can any of you define it?
There is vague talk that it is people who can trace their ancestry back to colonial times, so are supposedly "settlers", and not "immigrants." Odd, that George Washington's ancestor is called "The Immigrant John Washington" by family and historians, not "The Settler John Washington."
There is a major problem with that, the densest concentrations of people with colonial ancestry are Black neighborhoods. Almost all American Blacks have ancestry to the colonial era(importation of slaves almost completely stopped in 1808).
They will often start talking about having all four grandparents born in America, trump has zero grandparents born in America. Then they will settle on looking like the people considered US citizens in 1776. That means that lighter skinned Mexicans can step over the border and claim to be "Heritage Americans."