[Maurice Tift]

  A child born abroad to one U.S. citizen parent and one non-citizen parent acquires U.S. citizenship at birth under Section 301(g) of the Immigration and Nationality Act

  Certainly, Ted Cruz is a citizen by statute.

[DoodleDawg]

Certainly, Ted Cruz is a citizen by statute.

From the U.S. code: "The following shall be nationals and citizens of the United States at birth: (a) a person born in the United States, and subject to the jurisdiction thereof;"

So then by your definition we're all citizens by statute and nobody is a natural-born citizen.