A photo provided by the U.S. Marshal's office shows terrorism suspect Adel Daoud, of Hillside, Ill. Daoud, a 20-year-old U.S citizen, has denied government allegations that he accepted a phony car bomb from undercover FBI agents in 2012, parked it by a Chicago bar and pressed a trigger. Uncredited/AP hide caption

itoggle caption Uncredited/AP

U.S. Army Maj. Nidal Hasan is charged with a 2009 killing spree that killed 13 people at Fort Hood in Texas. Homegrown terrorism by Muslim Americans has been growing over the past decade. HO/AFP/Getty Images hide caption

itoggle caption HO/AFP/Getty Images

January 2010: Muslim-Americans protest against terrorism outside a federal court building in Detroit, where "Christmas Day" bomber Umar Farouk Abdulmutallab was being arraigned. Stan Honda /AFP/Getty Images hide caption

itoggle caption Stan Honda /AFP/Getty Images