In light of Robert Francis "Beto" O'Rourke's spat with Mayor Pete Buttigieg on gun control during the fourth Democratic debate, CNN host Alisyn Camerota pushes back in a follow-up interview and asks how this will prevent mass shootings since mass shooters don't actually follow the law. And Republican activist Scott Presler joins the show to tell us about the importance of voter registration to prevent red states from turning blue.