John Bingham, “father of the 14th Amendment”, the abolitionist congressman from Ohio who prosecuted Lincoln’s assassins, reaffirmed the definition known to the framers, not once, but twice during Congressional discussions of Citizenship pertaining to the upcoming 14th Amendment and a 3rd time nearly 4 years after the 14th was adopted.
The House of Representatives definition for “natural born Citizen” was read into the Congressional Record during the Civil War, without contest!
“All from other lands, who by the terms of [congressional] laws and a compliance with their provisions become naturalized, are adopted citizens of the United States; all other persons born within the Republic, of parents owing allegiance to no other sovereignty, are natural born citizens. Gentleman can find no exception to this statement touching natural-born citizens except what is said in the Constitution relating to Indians.” (Cong. Globe, 37th, 2nd Sess., 1639 (1862)).
The House of Representatives definition for “natural born Citizen” was read into the Congressional Record after the Civil War, without contest!
“every human being born within the jurisdiction of the United States of parents not owing allegiance to any foreign sovereignty is, in the language of your Constitution itself, a natural born citizen.” (Cong. Globe, 39th, 1st Sess., 1291 (1866))”
http://www.freerepublic.com/focus/f-bloggers/2925347/posts -—post 31
“every human being born within the jurisdiction of the United States of parents not owing allegiance to any foreign sovereignty is, in the language of your Constitution itself, a natural born citizen.” (Cong. Globe, 39th, 1st Sess., 1291 (1866))” "
I may add, when the Constitution was written in 1787, there was not debate or discussion over the natural born citizen clause as they all understood the same as Congress did in 1866.