He knows that the FBI and ATF will send an agent into EVERY new "white supremacist", KKK, or militia group that gets created. Put up a flyer for a militia meeting, and an ATF or FBI agent WILL attend (no doubt pretending to be Mr. Uber Conservative).
But the FBI wasn't infiltrating mosques. The CIA wasn't infiltrating nearly enough radical Islamic splinter groups, either.
Moreover, what little information that they did glean (probably from technical means or from our allies) was horded and not shared between intelligence agencies.
Furthermore, it is pretty apparent that the intelligence agencies weren't even viewing radical Islam as a threat that required any inter-agency cooperation on any level at all.
So I'm glad to see our good Senator busting some chops about all of this nonsense.
However, even with all of that said, I'm not convinced that getting rid of Tenent is the way to go. Perhaps he should be canned, but then again, there are times when the guy who made the blunder is the best guy to correct it. Whether this is one of those times is still in question, of course, but I suspect that GWB is on top of this situation and will handle it properly.
Homeland security under Ridge is certainly a step in the right direction. DOJ under Ashcroft is another positive (just listening to the Lefties whine about those two should tell you most of what you need to know - "you will know them by their enemies").
It wouldn't surprise me at all to see GWB giving Ridge enough time to get stabilized, and then once setup, to watch as more and more of the FBI and/or CIA gets transferred under Ridge, with the FBI slowly fading from existence over the years.
Not all purges have to be Revolutions, after all...