Whose Fault?

Experts Say Faulty Levees Caused Much of Flooding By Michael Grunwald and Susan B. Glasser

...scientists and engineers at Louisiana State University's Hurricane Center have concluded that Katrina's surges did not come close to overtopping those barriers. That would make faulty design, inadequate construction or some combination of the two the likely cause of the breaching of the floodwalls along the 17th Street and London Avenue canals -- and the flooding of most of New Orleans.

That sounds like the Army Corps of Engineers to me. But

John M. Barry -- who criticized the Corps in "Rising Tide," a history of the Mississippi River flood of 1927 -- said that if Katrina did not exceed the design capacity of the New Orleans levees, the federal government may bear ultimate responsibility for this disaster.

And he's the last source quoted in the article.