The CRBA is not the only document that will serve as evidence of a child being registered by its parents. A passport is also included in the law as an alternative to a CRBA. Either one is fine.
I don’t feel like finding he law at the moment, but I know it’s there.
It also makes sense.
According to Article 1,S8 of the US Constitution, Congress was given the authority to establish uniform rules of naturalization. Naturalization is the process by which one who is born a citizen of another country becomes a citizen of the United States. Congress was given no authority to declare as citizens, children born to US citizen parents because that would have been redundant and bad law.
Therefore, since Cruz is a citizen via the rules of naturalization established by Congress since 1940, how does that entitle him to be a natural born citizen where there would have been no authority for Congress to act on his behalf so to make him a citizen?
No Person except a natural born Citizen, or a Citizen of the United States, at the time of the Adoption of this Constitution
Those who were citizens at the time of the adoption of the Constitution were ALL born as subjects/citizens of another country, therefore, ALL citizens at the time of the adoption of the Constitution were for all intents and purposes of the law, ‘naturalized’ citizens as they all had to swear an oath to cause of the revolution.
And since Cruz was not born before the Constitution was adopted, Cruz, therefore, is not eligible. It's not complicated and it sure shows how far conservatism has changed to adopt liberalism so to suit their political desires.