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We also know that ISIS is recruiting who are not in those databases. So of course, we're going to miss them. And then we now learn that DHS says, "No, we can't check their social media."

"5th Republican debate transcript, annotated: Who said what and what it meant". www.washingtonpost.com. December 15, 2015.
We also know that ISIS is recruiting who are not in those databases. So of course, we're going to miss them. And then we now learn that DHS says, No, we can't check their social media.