In US Government class in High School, we were talking about US Citizenship. Teacher mentioned that the fule that the child of US citizens, born outside of the country, is refered to as something as 'Blood Citizenship,' or something like that. Anyway, point is, the kid's an American because he has American blood.
SO, I asked if a vampire, born outside of the US, who bites and consumes American blood, becomes an American citizen.
He said No, but the a vampire BORN in the US would be an American citizen.
At which point I said, 'Now you're just being ridiculous- everyone knows, vampires can't reproduce!'