prevent terrorist attacks within the United States;

reduce the vulnerability of the United States to terrorism;

minimize the damage, and assist in the recovery, from terrorist attacks that do occur within the United States;

carry out all functions of entities transferred to the Department, including by acting as a focal point regarding natural and manmade crises and emergency planning;

ensure that the functions of the agencies and subdivisions within the Department that are not related directly to securing the homeland are not diminished or neglected except by a specific explicit Act of Congress;

ensure that the overall economic security of the United States is not diminished by efforts, activities, and programs aimed at securing the homeland;

ensure that the civil rights and civil liberties of persons are not diminished by efforts, activities, and programs aimed at securing the homeland; and

monitor connections between illegal drug trafficking and terrorism, coordinate efforts to sever such connections, and otherwise contribute to efforts to interdict illegal drug trafficking.