The inevitable happens : With many blaming the growing scope of Katrina's devastation on the Bush administration, Sen. Hillary Clinton called yesterday for a 9/11-style probe into how the federal government responded to the crisis. "It has become increasingly evident that our nation was not prepared," Clinton (D-N.Y.) said in a letter to Bush asking him to set up a "Katrina Commission." After the water is pumped out and the mud hosed out, there will be plenty of blame to go around, between all three levels of government and over the last few decades. The "Katrina Commission", should it actually eventuate, promises to be however merely like another exercise in Bush-bashing, this time officially sanctioned.…