The United States government is actively monitoring terrorist cells affiliated with Osama bin Laden's al Qaeda network in eleven cities, from Florida to Boston to Denver to Houston. But al Qaeda is hardly our only threat. Hamas, formed in 1987, was run by top Palestinian officials in America from its earliest days, and has tentacles in Texas, California, New Jersey, Virginia, and Illinois. The University of South Florida was infiltrated by the infamous organization known as Palestinian Islamic Jihad -- one of its faculty members even left the country to take that group's top leadership role after his predecessor was assassinated. Hizballah has been tied to cells in North Carolina and Michigan, from which it drew funds and attempted to procure military equipment.