This one's about the Islamic Brotherhood, one of the leading Islamist organizations in the world, which gave us Ayman Zawahiri (Osama bin Laden's deputy) and sheik Omar Abdel Rahman (the WTC bomber of 1993):

"Muslim activists who know current and former Brotherhood sympathizers in this country say bitter opposition to Israel is a key part of Brotherhood beliefs. Law enforcement sources say hundreds of current and former Ikhwan supporters nationwide are under federal investigation for alleged financial support of Hamas and other Palestinian groups deemed terrorists by the U.S. government."

from middleeastinfo.org/article4735.html