“While American officials have blamed Osama bin Laden for the attacks, they are still struggling to connect him directly to the plot. Investigators believe there were many more conspirators, but despite the efforts of thousands of law enforcement and intelligence agents, the authorities have arrested only a handful of suspects in the United States.”
– Tim Golden, Michael Moss, and Jim Yardley, “Unpolished Secret Agents were Able to Hide in Plain Sight,” The New York Times, Sep. 23, 2001