The Justice Department has proposed a new domestic spying measure that would make it easier for state and local police to collect intelligence about Americans, share the sensitive data with federal agencies and retain it for at least 10 years.

The proposed changes would revise the federal government's rules for police intelligence-gathering for the first time since 1993 and would apply to any of the nation's 18,000 state and local police agencies that receive roughly $1.6 billion each year in federal grants.

Quietly unveiled late last month, the proposal is part of a flurry of domestic intelligence changes issued and planned by the Bush administration in its waning months. They include a recent executive order that guides the reorganization of federal spy agencies and a pending Justice Department overhaul of FBI procedures for gathering intelligence and investigating terrorism cases within U.S. borders.

Under the Justice Department proposal for state and local police, published for public comment July 31, law enforcement agencies would be allowed to target groups as well as individuals, and to launch a criminal intelligence investigation based on the suspicion that a target is engaged in terrorism or providing material support to terrorists. They also could share results with a constellation of federal law enforcement and intelligence agencies, and others in many cases.