>> thanks for joining me. are you ready to rock? "rock center" with brian williams, that is. it's the first prime time magazine in decades launching at 10:00 tonight on msnbc with a staff joining us with hard-hitting and engaging stories every week. one of those talented team members is kate snow who brings us the story of birth tourism, foreigners who travel to the united states from as far away as china to have their children here and gain citizenship for their children. >> the parents of these babies have no intention of staying in the united states. they're here just to get american citizenship for their baby. as soon as they secure a u.s. birth certificate and passport for their newborn, they'll fly home to china, having spent as much as $30,000 on air fare, lodging and medical expenses. >> where is his mom right now? >> shopping. >> it is instant american