Sen. Chris Murphy says "public policy has failed" in stopping mass shootings like the one in Parkland, Florida, adding that the effort needs to go beyond focusing on law enforcement and encompass a comprehensive approach to gun control and mental health https://t.co/Q3rbuJ8JF8 pic.twitter.com/Xj4OaUhtxe— CNN Politics (@CNNPolitics) February 25, 2018