Have some hope. America ironically went through the same crisis a century ago. Dr J is right some groups got counted as White, true - they bothered to assimilate and more or less outside surnames act White. I can see his thought on how White it was in 1990 as well with Hispanics finally being counted as their own group in the past 1990 census and not lumped with Whites.
But a lot of immigration will begin to be halted like that century ago, and birth rates for minorities are dropping like a rock while Whites seem merely to be at a crawl - and a crawl is better than a drop. If we’re lucky it’s a bottleneck we’re going through and just squeezed through to the very start of the other, better side… and thus we can see conditions slowly get better for normal Americans to start raising families by the latter halves and thirds of our lifetimes depending on age and the demographics finally begin a slow but sure rise back to normality.
I deserve all the rainbows, sock ‘em to me, but that’s my thoughts from checking numbers a bit back even before Trump came in.