"They should be sent back as soon as it can be determined who responsible adults in their families are. There are concerns about whether all of them can be sent back, but I think all of them who can be should be reunited with their families…We have to send a clear message: Just because your child gets across the border, that doesn’t mean the child gets to stay. We don’t want to send a message that’s contrary to our laws or will encourage more children to make that dangerous journey."