Guidelines Expand FBI's Surveillance Powers Justice Department officials released new guidelines yesterday that empower FBI agents to use intrusive techniques to gather intelligence within the United States, alarming civil liberties groups and Democratic lawmakers who worry that they invite privacy violations and other abuses. The new road map allows investigators to recruit informants, employ physical surveillance and conduct interviews in which agents disguise their identities in an effort to assess national security threats. FBI agents could pursue each of those steps without any single fact indicating a person has ties to a terrorist organization. Attorney General Michael B. Mukasey said the guidelines are necessary to fulfill the FBI's core mission to predict threats and respond even before an attack takes place. Civil liberties activists yesterday raised anew questions about the expanded role of the FBI in collecting an array of foreign intelligence within U.S. borders, absent evidence of a crime. For instance, the guidelines allow FBI agents to conduct interviews and monitor the movement of people who may possess useful information on subjects of general interest to American policymakers, such as a foreign government's oil exports....