The Islamic Society of North America or ISNA, the nation's largest Muslim group, will hold its 51st annual convention in Detroit's Cobo Center Friday through Sept. 1, and will feature former President Jimmy Carter as the keynote speaker. ... A “secret special guest” is also on the bill. The convention‘â€s opening session Friday will include words from Michigan Gov. Rick Snyder and Bishop Elizabeth Eaton, the national leader of the Evangelical Lutheran Church in America. U.S. Rep. Keith Ellison (D-Minn.), the first Muslim member of Congress,