Every U.S. citizen is also a U.S. National but not all U.S. Nationals are U.S. Citizens (folks born in unincorporated territories like American Samoa).
Senator Cruz qualifies as a U.S. National AND a Citizen of the United States at Birth under Title 8 of the U.S. Code Section 1401 point G.
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: Provided, That any periods of honorable service in the Armed Forces of the United States, or periods of employment with the United States Government or with an international organization as that term is defined in section 288 of title 22 by such citizen parent, or any periods during which such citizen parent is physically present abroad as the dependent unmarried son or daughter and a member of the household of a person;”
http://www.law.cornell.edu/uscode/text/8/1401
The only remaining question (which should have been taken up by the Supreme Court for Obama) is to have a definitive, once and for all answer on whether there is any difference between a Citizen of the United States at Birth under the 14th Amendment and a Natural Born Citizen under Article 2.
I am aware of (g).
And of course is "Title 8 of the U.S. Code Section 1401 point G." constitutional? That's all I'm axin', Germanicus. WTF is the problem up there at the SCOTUS? If they say it's OK, I could go for this Cruz fellow myself!
Let's move on this before the Mombasa MF and his faithful RINO-dogs appoint Raúl Castro or Gorbachev to the court, OK?