BALDWIN: New questions and new outrage today after the U.S. government admitted it lost track of nearly 1500 migrant children last year. The Department of Health and Human Services says the undocumented kids were placed in sponsor homes after crossing the border. Immigration advocates are demanding answers about these missing children. The federal government is insisting it is not legally responsible. CNN's Rosa Flores is live in San Antonio, Texas. Rosa, when you look at this it is 1475 kids. How did they become unaccounted for?</s>ROSA FLORES, CNN CORRESPONDENT: Brooke, that is the $10,000 question here, how does the United States, the best country in the entire world lose about 1500 children? Here's the background, here's what we know. In the physical year of 2017 Health and Human Services who had custody of about 40,000 unaccompanied children checked on them, in December. And they made phone calls and called about 7600 of those children, and they couldn't find 1500 of them. They couldn't find the children or the sponsors, it's unclear exactly where those children are, the documented community lives in a shadow community. That might have to do, there are concerns of a potential these children could be in the hands of traffickers, that's been documented in the past. Here's what Health and Human Services is saying, once that child is placed with a sponsor, then quote, he or show ceases to be in the custody of the U.S. government. And all HHS provided subsistence and at that point, and the child becomes a responsibility of his or her parents, guardian or sponsor. And Brooke the big question is should the United States do more? Is there a moral obligation here to do more?
Trump HHS Loses Track of 1500 Immigrant Children.