Interesting to learn
http://en.wikipedia.org/wiki/Birthright_citizenship_in_the_U...
At best, this helps the child's future opportunities, which may help the family. It in no way gives the parents a pass. A cursory review of sponsorship laws would reveal this. Yet for some reason, people parrot this silly saying as if it was somehow true.
The relevant portion is: "A person born in the United States to a foreign diplomatic officer accredited to the United States, as a matter of international law, is not subject to the jurisdiction of the United States. That person is not a United States citizen under the Fourteenth Amendment to the Constitution. Such a person may be considered a lawful permanent resident at birth."
[1] I know that the US does not have conscription at the present time