happen. a rock center investigation found dozens of cases where host parents were convicted of sexually abusing students. >> were you scared? >> i was lost, i did not really realize what had happened either. >> this is your host father? >> yeah, my host father. >> kate snow joins us now. this is really appalling who are is in charge of making sure that this does not happen? >> well, there's two answers to that, there are organizations throughout this country about 80 of them that bring these kids in from overseas, they are all regulated by the u.s. state department, so ultimately the buck stops with the u.s. state department and tonight you'll hear from them as well, and interestingly andrea, they say through a spokes person that they know there are problems with the program. they have been aware of it. there was a big inspector general report in two no2009 th