>> “The Constitution does not define the phrase natural-born citizen” <<
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Wow! - It doesn’t define any other terms used therein either, and they are all to be taken in the common usage of the era.
If it meant your definition, they would not have needed their escape clause for themselves; most of them were born on the soil of the nation created by the Declaration of Independence.
There are two ways to get rid of Obama. One way is to vote him out by supporting Romney.
The other way is to start a lawsuit and hope that Ruth Bader Ginsberg and Sotomyer , and Breyer and the other liberals agree with you and throw Obama off the ballot. Good luck with that.