The correct proposition is that a person who is born subject to the sovereignty of some head of state other than the United States is not a Natural Born Citizen and is not eligible to hold the office of President.
The disqualifying condition would usually occur because the person would be born outside the United States and thus subject to the sovereignty of the head of state of the place of birth.
Dual Citizenship per se is largely irrelevant.
Are you asserting that Uraguqay could disqualify a candidate they didn't like for President of the US by passing legislation granting such person citizenship? Of course not.
Have you considered the fact that a large part of the population of the US, is, unknown to the individual members, citizen of another country? Many Euro countries have automatic citizenship to grandchildren of departed citizens--if you have a grand parent; or grand father in some cases; you are automatically a citizen, know it or not.
More likely to be a problem? An immigrant to the US from a country which does not automatically grant citizenship to granchildren; comes to US; marries a US Citizen and applies for citizenship; they have a child before citizenship is granted thus leaving the child a dual citizen (of the US by place of birth under the 14th Amendment; of the country of origin because the parent was a citizen only of that country at the date of birth).
The child grows up and has his own son; that son is also a citizen of both countries under normal principles of international law in most cases.
Silly to focus primarily on the dual citizen question--the issue; the only issue; is sovereignty of the place of birth.
Yes, sir. Bring it home.
[An alien parent’s] “allegiance to the United States is direct and immediate, and, although but local and temporary, continuing only so long as he remains within our territory, is yet, in the words of Lord Coke in Calvin’s Case, 7 Coke, 6a, ’strong enough to make a natural subject, for, if he hath issue here, that issue is a natural-born subject’”
“Subject’ and ‘citizen’ are, in a degree, convertible terms as applied to natives; and though the term ‘citizen’ seems to be appropriate to republican freemen, yet we are, equally with the inhabitants of all other countries, ’subjects,’ for we are equally bound by allegiance and subjection to the government and law of the land.’
and
…every child born in England of alien parents was a natural-born subject, unless the child of an ambassador or other diplomatic agent of a foreign state, or of an alien enemy in hostile occupation of the place where the child was born.
The same rule was in force in all the English colonies upon this continent down to the time of the Declaration of Independence, and in the United States afterwards, and continued to prevail under the constitution as originally established.”
-United States v. Wong Kim Ark, 169 U.S. 649 (1898)-
If Cruz gets a billionaire to finance the ‘fact’ that he is a “natural born citizen” then that’s what the judges will say. Soro’s money paid for Obama and it will be money that pays for Cruz’s election run.