Do you have a link to your support for that premise. I have been unable to find a supreme court decision to that effect. I found two that said "Not So".
[From Wikipedia "The Fourteenth Amendment to the United States Constitution provides an additional source of constitutional doctrine that emphasizes birth "in the United States" AND subjection to U.S. jurisdiction at the time of birth, as the defining elements of citizenship (other than citizenship by naturalization):]
From the amendment:
"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. . ." Amendment XIV, section 1.
:>)Easy Does It:>)
Yes they are.
"Every Person born within the limits of the United States, and subject to their jurisdiction, is by virtue of natural law and national law a citizen of the United States. This will not, of course, include persons born in the United States who are foreigners, aliens, who belong to the families of ambassadors or foreign ministers accredited to the Government of the United States, but will include every other class of persons."
Senator Jacob Howard, co-author of the citizenship clause of the 14th Amendment, 1866.