In an interview with ABC News:

“[ISIS has] proven time and time again to put Islamic law as the priority and the establishment of an Islamic state as the goal.”Lee Ferran, “American Wannabe ISIS Fighter Donald Morgan Gets 20 Years in Prison,” ABC News, May 13, 2015, http://abcnews.go.com/International/american-wannabe-isis-fighter-donald-morgan-20-years/story?id=31009777.