The debate over Senator Ted Cruz's eligibility to run for president revolves around conflicting information from several key authorities on the Natural Born Citizen clause. The question is whether a person is a "natural born citizen" (as intended by Section 1 Article 2 of the Constitution) by merely being born inside the U.S. (the rule of jus soli, or 'rule of the soil'), or by being born in the U.S. with one or both parents also being American citizens...or by being born anywhere in the world to one or more parents who are U.S. citizens (the rule of jus sanguinis,...