The incompetence on the part of officials appointed by a President ultimately reflects back upon the man who made the appointments. Obama is as responsible for this as Bush was for the screwups surrounding 9/11 and Katrina, that is to say "yes, and no." Although neither Bush nor Obama could've forseen the exact circumstances, their appointees reacted in ways that did not reflect well upon the men who put them in office. The blame should be cast on the mid-level bureaucrats mostly, but it mustn't be forgotten that somebody put them in office.
Wer mit Ungeheuern kämpft, mag zusehn, dass er nicht dabei zum Ungeheuer wird. Und wenn du lange in einen Abgrund blickst, blickt der Abgrund auch in dich hinein. -Friedrich Nietzsche, Jenseits von Gut und Böse