A better question:
Why has virtually everyone on the "Left," however defined, refused to call for the impeachment of Bush on the grounds that his failure (intentional or not) to take elementary steps to protect the security of passenger aviation before 11/9 and to use his airforce to protect the civilian population during the adequately long interval between the hijackings and the impacts constitute, as a matter of public notoriety, a default of his legal office--criminal nonfeasance in office?
Shane Mage
"Thunderbolt steers all things."
Herakleitos of Ephesos, fr. 64