Pearl Harbor was a total and complete f*ck*p from the White House through the Navy and War Departments down to Kimmel and Short. With all of the evidence that had been collected, the failure to connect the dots was inexcusable.
To claim that it was some kind of treasonous conspiracy, though, is just nonsense.
Washington sent a "war warning" on November 27th; advising commanders of an imminent war with Japan. I guess DC should have just ordered Pearl to man some guns and put up a few fighters; their local commander seemed unable to do so.