Massachusetts December 31, 2018 9:15 am Warren Announces Forming Exploratory Committee Massachusetts Sen. Elizabeth Warren is taking the first major step towards a potential run for the 2020 presidency. US & World Videos 2:07 Campus tensions continue to escalate in Boston 38:12 Prosecution's opening statement in the Karen Read trial | FULL VIDEO 3:30 Opening statements underway in the Karen Read trial 2:08 Tension grows over campus protests in Boston 2:31 Fallen Billerica Police Sgt. Ian Taylor honored at vigil