Just to show what an ignorant buffoon Stu is.. here is some more from wikipedia...
some for the two parent idea... some perhaps not...
http://en.wikipedia.org/wiki/Natural-born-citizen_clause_of_the_U.S._Constitution
Treatises and academic publications
In an 1829 treatise on the U.S. Constitution, William Rawle wrote that
every person born within the United States, its territories or districts, whether the parents are citizens or aliens, is a natural born citizen in the sense of the Constitution, and entitled to all the rights and privileges appertaining to that capacity.[15]
During an 1866 House debate James F. Wilson quoted Rawle's opinion, and also referred to the "general law relating to subjects and citizens recognized by all nations" saying
...and that must lead us to the conclusion that every person born in the United States is a natural-born citizen of such States, except it may be that children born on our soil to temporary sojourners or representatives of foreign Governments, are native-born citizens of the United States.[16]
An English-language translation of Emerich de Vattel's 1758 treatise The Law of Nations (original French title: Le Droit du gens), stating that "The natives, or natural-born citizens, are those born in the country of parents who are citizens," was quoted in 1857 by Supreme Court justice Peter Vivian Daniel in a concurring opinion in Dred Scott v. Sandford,[17] as well as by Chief Justice Melville Fuller in 1898 in his dissenting opinion in United States v. Wong Kim Ark.[18]
Alexander Porter Morse, the lawyer who represented Louisiana in Plessy v. Ferguson,[19] wrote in the Albany Law Journal:
If it was intended that anybody who was a citizen by birth should be eligible, it would only have been necessary to say, âno person, except a native-born citizenâ; but the framers thought it wise, in view of the probable influx of European immigration, to provide that the president should at least be the child of citizens owing allegiance to the United States at the time of his birth. It may be observed in passing that the current phrase ânative-born citizenâ is well understood; but it is pleonasm and should be discarded; and the correct designation, ânative citizenâ should be substituted in all constitutional and statutory enactments, in judicial decisions and in legal discussions where accuracy and precise language are essential to intelligent discussion.[20]