He insisted that the 14th Amendment says "any person born in the United States is a citizen of the United States." and the punctuated his statement with an insistent "period!" But of course that is not where the period is in the 14th Amendment. The fourteenth, first sentence reads: "All persons born or naturalized in the United States, and subject to the jurisdiction thereof, are citizens of the United States and of the State wherein they reside."
It's funny how those who want open borders always seem to leave out the bolded part of that sentence.
The lefty dimwits in SCOTUS would interpret it as since they are in the U.S., they are subject to the jurisdiction of the US. We know that is not what was meant, but they will use current political arguments to the contrary.