The Al-Kifah Refugee Center is bin Laden’s largest fundraising group in the US and has offices in many cities (see 1986-1993 and 1985-1989). Counterterrorism expert Steven Emerson will later call it “al-Qaeda’s operational headquarters in the United States.” [Emerson, 2006, pp. 436] Nearly every figure involved in the 1993 WTC bombing has a connection to the Al-Kifah branch in Brooklyn, New York. [Newsweek, 3/29/1993] Bob Blitzer, a former FBI terrorism chief who heads the FBI’s first Islamic terrorism squad, is stunned to discover the number of militants connected to Al-Kifah who have left the US to fight for Muslim causes overseas. He will later remember thinking, “What the hell’s going on?” Neil Herman, head of the FBI’s WTC bombing investigation, will comment, “It was like a modern underground railroad.” But no effort is made to keep track of who has gone overseas to fight, even though many of the WTC bombers had gone overseas to fight then came back to use their training to plan an attack in the US. Furthermore, the Al-Kifah office in Brooklyn shuts itself down, but all the other branch offices remain open. US News and World Report will later note that the offices “were left largely intact [and] helped form the nucleus of bin Laden’s al-Qaeda network.” Herman will say, “They certainly continued on, but were somewhat fragmented.” Over time, the other branches generally go underground. Soon their functions are largely replaced by a network of Islamic charities. For instance, the functions of the Brooklyn branch, including its newsletter and website, are directly taken over by a new Boston-based charity called Care International (see April 1993-Mid-2003). Another charity is the Benevolence International Foundation (BIF), run by Enaam Arnaout, who is a veteran of the Al-Kifah Brooklyn office. [US News and World Report, 6/2/2002] The US will not freeze the assets of Al-Kifah until shortly after 9/11, long after all the US branches have dissolved (see September 24, 2001). There is evidence to suggest that the CIA had ties to Al-Kifah and blocked FBI investigations of it (see Late 1980s and After).