As a former commissioned Army officer, I can tell you one maxim drilled into each young Lieutenant's head:
THE COMMANDER IS ALWAYS RESPONSIBLE!
This is the same arguement the Socialists are using vs. GWB in the War on Terror. Works for General Ashleigh even moreso.
Except that Clark was not the commander, not present, had no operational role and was only involved as the commander of a unit at Fort Hood that was tasked by its higher HQ to provide some equipment and training.
Clark is arrogant, self-promoting, and integrity-deficient. But he had nothing to do with Waco.