I did not say that, today his older children would be NBC. What I said was, had those children been born between the years of 1790-1950, US law would have considered those children to be NBC because upon marriage to Donald, his wife would have automatically become a US citizen.
What was the specific law that changed it in 1950? If they can pass legislation that changes how constitutional language is interpreted, then it’s worthless. I’d say it’s unconstitutional legislation if it changes how the Constitution operates.