By information I have as well as millions of others Cruz was not born in the US and one parent i.e. his father was not a US citizen. I know of no information that puts in cases of both parents a mother’s citizenship above the father’s or visa versa.
Senator Cruz’s father became a naturalized U.S. citizen in 2005. There is no distinction in law between a Citizen of the United States At Birth and a Natural Born Citizen.
Here is the relevant section of current US law:
8 U.S.C. § 1401
The following shall be nationals and citizens of the United States at birth:
(g) a person born outside the geographical limits of the United States and its outlying possessions of parents one of whom is an alien, and the other a citizen of the United States who, prior to the birth of such person, was physically present in the United States or its outlying possessions for a period or periods totaling not less than five years, at least two of which were after attaining the age of fourteen years”