Rep. Cathy McMorris-Rodgers, R-Wash., walks to a Sept. 2013 classified, members-only briefing on Syria in Washington. Carolyn Kaster/AP hide caption

itoggle caption Carolyn Kaster/AP

John Podesta was Bill Clinton's White House chief of staff from 1998 to 2001, helping the president survive impeachment. Chip Somodevilla/Getty Images hide caption

itoggle caption Chip Somodevilla/Getty Images

Sen. Elizabeth Warren, a Massachusetts Democrat, is leading a push to increase Social Security benefits. But her whole party is not in agreement on the issue. Jacquelyn Martin/AP hide caption

itoggle caption Jacquelyn Martin/AP