Not all terrorist attacks in the United States originated domestically. On 26 February 1993 the World Trade Center in New York City was the target of a bomb that killed six and injured more than a thousand people. Evidence gathered by federal investigators indicated that the terrorist act was carried out by members of several different Muslim fundamentalist groups pursuing a jihad, or holy war, against America. The investigation also revealed the wide extent to which foreign terrorists lived and operated in the United States. At the time of the explosion about fifty thousand people were in the 110-story complex. The bomb, which was placed in a parking garage beneath the structure, was comprised of approximately twelve hundred pounds of explosives, including sodium cyanide. The attack caused $500 million in damage. It was the largest act of foreign terrorism on American soil; state and federal government...