FILE - In this March 10, 2015, file photo, Sen. Bernie Sanders, I-Vt. speaks at the International Association of Firefighters (IAFF) Legislative Conference and Presidential Forum in Washington. Sanders will run for president in 2016 and seek the Democratic nomination.
FILE - In this March 10, 2015, file photo, Sen. Bernie Sanders, I-Vt. speaks at the International Association of Firefighters (IAFF) Legislative Conference and Presidential Forum in Washington. Sanders will run for president in 2016 and seek the Democratic nomination. Pablo Martinez Monsivais AP
FILE - In this March 10, 2015, file photo, Sen. Bernie Sanders, I-Vt. speaks at the International Association of Firefighters (IAFF) Legislative Conference and Presidential Forum in Washington. Sanders will run for president in 2016 and seek the Democratic nomination. Pablo Martinez Monsivais AP