That countries law cannot change where a person was born or the parents to whom they were born. Nothing can change that and your argument dies right there. So a country bestowing citizenship on an American Citizen is meaningless in the United States. It does not change where they were born and it does not change their parents. They could bestow deity status and it means nothing.
You are being just like the liberals. Things aren't the way you want them to be so you want to change the meaning of the language to suit your desire. You want citizenship by birth to mean something other than where you were born and to whom you were born. You want it to include whatever some other country decides. Obviously the founders would not have agreed.
“You are being just like the liberals.”
You are mistaken as to what a sovereign country can do as to its own NATURALIZATION laws.
Drop the Luxembourg discussion if you find it so disgusting. Consider the three-way split that is Ted Cruz. Is he a Natural Born Citizen of even one of the three countries Canada, U.S. and Cuba? If one, which one and why? If one, why not two? If two, why not all three?