Democratic Presidential Candidate Sen. Bernie Sanders (I-VT) Holds Interfaith Roundtable At DC Mosque [Getty Images]

WASHINGTON, DC - DECEMBER 16: A street sign for Islamic Way is seen outside the Masjid Muhammad, The Nation's Mosque, piror to Democratic presidential candidate Sen. Bernie Sanders' (I-VT) arrival for an event December 16, 2015 in Washington, DC. Sen. Sanders participated in an interfaith roundtable at the mosque. (Photo by Alex Wong/Getty Images)

Getty Images News Alex Wong