Who's responsible for unaccompanied migrant children?

Since 2012, more than 200,000 undocumented kids have entered the U.S. unaccompanied, without an adult. Last night, the Senate Homeland Security Committee released a three-year investigation finding that once the kids are with sponsors, no one in the federal government is keeping track of them. Now Senators are concerned U.S. agencies are failing these children. Lisa Desjardins reports.