The Bush administration's broad new proposal for domestic security, to be made public on Tuesday, calls for sweeping changes that include the creation of a top-secret plan to protect the nation's critical infrastructure and a review of the law that could allow the military to operate more aggressively within the United States.

Among the proposals: Create an "intelligence threat division" in the new department that uses what the plan calls "red teams" of intelligence experts. These teams would act like terrorists and plot attacks on vulnerable new targets in the country so that means of preventing such attacks can be devised.

The plan calls for the first thorough inventory of the country's critical infrastructure — both public and private — followed by a secret plan to protect it. The inventory would include, for example, highways, pipelines, agriculture, the Internet, databases and energy plants.