It was because the CIA is so leaky (and otherwise undependable) that British intelligence has a direct link to the WH, according to to guests on the John Batchelor Show. The Brits gave Bush the Niger yellowcake info directly bypassing the CIA which further inflamed the CIA. Bush said in retrospect that he shouldn't have included the "16 words" in his SOTU--not because it was untrue, but because it was from an outside source.
OK, it's off thread, but linked in a way.
Maybe off-thread, but very interesting. And as the WSJ article makes clear, there is a definite connection between the Atta meeting and constant, deliberate intelligence leaks by rogue agents in the CIA and the FBI.
In other words, all this stuff is interconnected. Most likely the same people who deny the Atta meeting took place because they have a political agenda are responsible for the leaks. Possibly they did it deliberately in order to blow any chance that the Czechs could turn up more evidence.