http://freerepublic.com/focus/bloggers/3382200/posts?q=1&;page=61
See post 66. Excellent example of WHY BOTH parents must be US citizens.
Ping
US law does not require both parents be US citizens. The Naturalization act of 1790 does not require both parents be US citizens.
... “the children of citizens of the United States that may be born beyond Sea, or out of the limits of the United States, shall be considered as natural born Citizens: provided, That the right of citizenship shall not descend to persons whose fathers have never been resident in the United States”.
Notice the open nature of the wording. It is not restrictive in that it does not require BOTH parents.