AP Photo

During the first part of this period, the Republicans were in control. They expanded a vast national security bureaucracy. In their series in The Washington Post, Dana Priest and William M. Arkin detail the size of this apparatus. More than 1,200 government agencies and 1,900 private companies work on counterterrorism, homeland security and intelligence programs at around 10,000 sites across the country. An estimated 854,000 people have top-secret security clearance. These analysts produce 50,000 reports a year — a flow of paper so great that many are completely ignored.

In the second part of the period, Democrats were in control. They augmented the national security bureaucracy but spent the bulk of their energies expanding bureaucracies in domestic spheres.