via Ryan Mauro at Obama Addresses American Islamist Convention.
In 1991, a U.S. Muslim Brotherhood memo placed ISNA at the top of a secret list of “our organizations and the organizations of our friends.” The document said the organization’s “work in America is a kind of grand jihad in eliminating and destroying the Western civilization from within…”
In 2007, federal prosecutors named ISNA an unindicted co-conspirator in the terrorism-financing trial of the Holy Land Foundation, a U.S. Muslim Brotherhood entity housed within ISNA. The U.S. government identified ISNA as a U.S. Muslim Brotherhood entity. The designation was upheld in 2009 due to “ample” evidence linking ISNA to Hamas.
An FBI informant inside the U.S. Muslim Brotherhood network identified ISNA as a Brotherhood front as early as 1987. The source was documented as being “convinced” that the Brotherhood fronts have “a secret agenda which includes the spread of the Islamic Revolution to all non-Islamic governments in the world which does include the United States.”
More at the link above.