In Minor v. Happersett, 88 (Wall.) U.S. 162 (1874) the Supreme Court ruled that the phrase ‘natural born citizen’ as used in Art II, Sec 1, Clause 5 as a requirement to be eligible to be president is a status that is not in doubt if both of the person’s parents are US citizens, but that if one of the parents is not a US citizen, then that status in doubt.
“In Minor v. Happersett, 88 (Wall.) U.S. 162 (1874) the Supreme Court ruled that the phrase ‘natural born citizen’ as used in Art II, Sec 1, Clause 5 as a requirement to be eligible to be president is a status that is not in doubt if both of the person’s parents are US citizens, but that if one of the parents is not a US citizen, then that status in doubt.”
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See http://nativeborncitizen.wordpress.com/2009/08/06/ken-dunbar-and-minor-v-happersett-punkd/:
“The doubts were finally settled in Wong Kim Ark and to suggest that Happersett settled the issue as to who is Natural Born ignores the actual text of the ruling.”