[patlin]

so easy a kid could do it

http://memory.loc.gov/cgi-bin/ampage?collId=llcg&fileName=015/llcg015.db&recNum=552

[Yosemitest]

I read:

"The Supreme Court has never explicitly ruled on whether
children born in the United States to illegal immigrant parents are entitled to birthright citizenship via the 14th Amendment,
although it has generally been assumed that they are.
A birth certificate (a.k.a Certificate of Live Birth for children born in certain states) issued by a U.S. state
or territorial government is evidence of citizenship, and is usually accepted as proof of citizenship."

That clears it up for me.