Gene Healy makes a good case in his latest column:
In a new book, “Terror, Security, and Money,” professors John Mueller and Mark G. Stewart closely examine that question and, using a set of assumptions weighted in favor of the government, conclude that, to justify the increased post-Sept. 11 spending, we “would have to deter, prevent, foil, or protect against 1,667 otherwise successful [attempted Times Square car bomb-type] attacks per year, or more than four per day.”
Terrorism is rare. Much rarer than 4 attacks per day. We already have military and police forces to deal with that rare threat. DHS is redundant at best. It would be both good policy and good politics to shutter the department and hand its legitimate functions over to other agencies.
Inertia Wins! 