The census does regular updates of population that factor in migration estimates. The latest was done last year and still has the US around 72-76% white. Let's also remember that there are many Spanish speaking people who identify as white and there is even a whole Spanish speaking commonwealth full of people, many of whom identify as white. white Cubans, for example, sometimes don't identify as Hispanic or Latino, and white Mexicans and Brazilians seldom identify with other migrant groups at all. If you take them and other white Spanish speakers out of the number along with biracial people from all over the country, you can revise the white share down to approximately 60-61%, but it's not quite representative.
U.S. Census Bureau QuickFacts: United States
Your other numbers are literally just made up. If you travel through the US, there are vast swathes of the country will you will not see any people of color. It's not just Idaho, Montana or the Nebraska/Kansas/Iowa/Wyoming/Dakotas. There are large pockets of Pennsylvania like this, enclaves in Ohio, Indiana, Virginia, the Carolinas, Georgia, Alabama, Kentucky, Tennessee, entire portions of New England, stretches of New York, central parts of New Jersey, parts even of the Pacific Northwest where you live. I know it's hard to believe when you have Salvatruchas spray painting your fence, but most of America is considerably white majority outside of major cities and in places where there have been patterns of Central American cluster migration. That's to say nothing of the segregation in housing and social settings that minimizes any opportunity to "intermix" at all.
Another made up number, "conservative estimates" of 97% "non-caucasian" (whatever that means) immigration. The actual number of white European and Canadian migrants is estimated around 12-14%, but the primary reason they have been displaced is not just because of a spike in Central and South American migration, but also because of improved conditions in Europe since the early waves of European migration between 1840 and 1940. After WWII, Europeans simply haven't had as much reason to come here, though a large portion of the US population today is only 1 or 4 generations removed from an immigrant ancestor.
Modern Immigration Wave Brings 59 Million to U.S.
I brought this up initially mostly in jest, but sadly, the modern anti-immigration movement is deeply tied to environmental concerns with its founder John Tanton having himself been a believer in the "over-population crisis," and its supposed environmental impacts. In fact, many of his front groups masquerade as being "green" groups when they're really thinly veiled eugenicists or racists who are obsessed with preserving a white majority.
