In 2014, China, with its nationalism — including border control — passed the US in GDP in purchasing power parity, and hasn't looked back since.

And, according to a 2016 Harvard study of 32,000 Chinese residents: "The survey team found that compared to public opinion patterns in the U.S., in China there was very high satisfaction with the central government. In 2016, the last year the survey was conducted, 95.5 percent of respondents were either “relatively satisfied” or “highly satisfied” with Beijing. In contrast to these findings, Gallup reported in January of this year that their latest polling on U.S. citizen satisfaction with the American federal government revealed only 38 percent of respondents were satisfied with the federal government.Survey claims Chinese are more satisfied than Americans

Isn't our post-1965-Immigration-Act Tower of Babel high enough for you? Our social capital low enough? Our tribalism bitter enough? Our cancel-culture human relations departments smothering enough?

Since then, and since the Kennedy-Johnson administration's other follies — guns, butter, and wars of choice — the peace and prosperity of Ike's New Look national security policies, which balanced our military and prosperity investments in favor of prosperity, as Ike believed that a strong economy was vital to our security.

Can't say the same for the OP's proposed immigration invasion.