The GOP: Split Down the Middle on Immigration Reform

Immigration reform is back on the Capitol Mall today—but it might not reach the halls of Congress. We’ll hear what demonstrators are hoping for, especially the so-called “Dreamers” brought here as children. What are the prospects for any legislation this year? Also, the United Nations initiates its 8-month plan to dismantle and destroy Syria's 1000-ton arsenal of chemical weapons, and author David Finkel provides extraordinary access to the thoughts and emotions of Iraq-war veterans struggling with PTSD.