This nation's greatest strength is the European culture that built this nation.

You can look at the cultures that built governments in South America or Africa, China or Russia.    People from those regions, to America, to escape those cultures.   They did not come here for "diversity," they came here because their culture was unjust and brutal.

Here's the deal:  it is not in the best interest of any nation to swamp itself with people who believe in Sharia law.   That's a deeply inferior culture of brutality to women and gays, and to Catholics, and to Jews, etc.

Not all cultures are equal.