-- Marco Rubio is a U.S. citizen by naturalization at birth under the authority of the same U.S. Immigration and Naturalization Act of 1952 as Ted Cruz, only in an earlier paragraph of that statutory law regarding the birth of a child within the jurisdiction of the United States with foreign parent/s. --
I've got the act open in my browser. Sec 301(a), to be precise. Cruz is at 301(a)(7) [next page, 236]. Where is Rubio?