I didnt understand whos country it is, and who is the minority / majority?
As for the population ratios in the U.S, a short internet search tells me that there are estimated to be 330 million people living in the U.S as of 2020, of whom it is estimated that 46.8 million are african americans and 60 million are hispanic. That comes down to 14.18% and 18.18% respectively.
So given some margin for error, and accounting for other minority groups, only 1 in 3 would be of another skin colour than white in the U.S.
[0] https://www.pewresearch.org/fact-tank/2016/06/23/its-officia...
I guess there will be a seismic shift for many things in U.S society over the coming decades, where one of the more interesting would be voting patterns.
Only that the U.S border cannot in any way be called an open border, as it does not allow free movement of people and goods across its borders when arriving from another country.
While selective in who it is open for, the Schengen Area can be called open as it requires no visa's or passports and allows complete freedom of movement for citizens of those countries that have signed up for the agreement.
That contains no statement on who's race that country is (as obviously it, as all countries, is not owned by one group of its citizens over others)