Arizona State Sen. Russell Pearce explains on CNN the constitutional background of the 14th Amendment, and why it doesn't mean that any baby born here is a U.S. citizen.

Rep. Steve King (R-IA), the incoming chairman of the subcommittee that oversees immigration, is expected to push a bill that would deny “birthright citizenship” to such children. And in Arizona, incoming state Senate President Russell Pearce, is planning on introducing legislation challenging a portion of the wording of the 14th Amendment. They are keeping quiet about their exact approach, though.