On citizenship
Although the U.S. Supreme Court has never specifically addressed the meaning of “natural born citizen,” there are several Supreme Court decisions that help define citizenship:
http://www.aca.ch/joomla/index.php?option=com_content&task=view&id=112&Itemid=44
Montana v. Kennedy, 366 U.S. 308 (1961): A person born in 1906, whose mother was a native-born citizen of the United States and whose father was a foreign citizen, who was born overseas and then moved to the United States, was not a citizen of the United States by birth.
Great link, thanks!