Tim Pawlenty at the Debate

There was just so much quotable material from the Republican debate the other night but this one from Tim Pawlenty stands out. When asked about people born here and citizenship he responded by saying that there is nothing in the Constitution that says that you are a citizen just because you are born here. Unfortunately for Mr. Pawlenty that is exactly what the Constitution says. By his reasoning only the people who obtain citizenship are citizens (they had to more than just be born here). I'm waiting for the mis-spoke explaination. Maybe he just meant brown people from Central and South America couldn't be citizens if born here. I'm pretty sure that my ancestors started families here before they were naturalized citizens, so what does that make my Great Grandfather, and anchor baby?