Ah. It’s so simple.
So Maria from Mexico can have her son born in the United States so that he can become President of the United States?
Or an illegal Russian couple giving birth to their son Yuri can be President of the United States?
Right?
But I am not "conversant" on the relevant case law for that issue, and the case law is more complex for child born in the US than it is for a child born abroad.
And while the "anchor baby" (parents here illegally), and children born of foreigners here legally, are important issues, they are completely irrelevant in Cruz's case.
I will say, those babies have citizenship of their parents, so no matter what the US does, the babies are not born without a country.