In the US, everyone who is white is an immigrant or the offspring of a recent immigrant. No exceptions. Most brown people are Native Americans. Yes, the Hispanics, the Latinos, the Mexicans, all the Tribes: Native Americans. Not immigrants. You MAGA have it all backwards.
I would say that you're forgetting that the people we call Native Americans, from N A all the way down the tip of S A are descendants of those who crossed the ice bridge from now Russia to Alaska. Some also may have come by boat. Some folks just got here 10k years before Columbus.
What’s wild is back 150-200 years ago, as the Europeans would be stepping off the boat in NY, they had people there getting them to register to vote right on site. A lot on conveniently forgetful people these days when it comes to immigration.