Like we said (from WaPo...)

With the three Cabinet replacements Bush has announced so far for his second term, he kept his circle tight by dispatching White House staff members to take over the State, Justice and Education departments. Aides said many other such moves will be announced, because Bush and senior adviser Karl Rove are determined to "implant their DNA throughout the government," as one official put it.

No dissent, no second-guessing, no challenging preconceived notions.