WASHINGTON - Attempting to loosen decades-old restrictions, the Pentagon is asking Congress to allow its intelligence agents to go undercover when they approach Americans who may have useful national-security information, rather than identifying themselves as intelligence operatives. The provision found in a wide-ranging intelligence bill would give the Defense Intelligence Agency new latitude to meet U.S. citizens without pulling out their DIA badges and later sending a formal notice of their rights under the landmark 1974 Privacy Act. The regulations were imposed to prevent recurrence of the intelligence scandals of the 1960s and 1970s, when the Defense Department was caught...