Does not apply to Cruz as his mother is a US citizen.
But was she a US citizen when she was living in Canada and voting in Canada and gave birth in Canada ?
The SCOTUS refers to Congressional acts "conferring citizenship upon foreign-born children of citizens," and you say the Court's statement doesn't apply be Cruz is a child of a citizen??
I don't think you read the passage I quoted. It says foreign-born children of U.S. citizens who are made citizens at birth by statute are naturalized citizens. That's a problem for your "he was a citizen at birth, therefore he's NBC" position.