I'll have to do some digging to back this up, but my impression is that Tony is being very aggressive on matters like this (though I don't know that he's spoken about the latest Wilson / Plame revelations). However, the press is simply ignoring him.
They've got their version of reality and they ignore anything that doesn't help them push it. Who cares if it's true or not?
As an aside and as idle speculation, I truly think that Tony Snow is responsible for the admin's new use of the term "islamofacists". I can almost hear Tony Snow begging the admin to be CLEAR about who the enemy is.
Tony hasn't commented on this (Plame/Wilson) because he has been on vacation. I believe he will be back on Tuesday, and expect to hear him comment on this next week.
And there is the answer to all the "Why don't they counter attack". The are and have been but the Junk media simply ignore anything that does NOT fit their propaganda template. Bush went out and gave a fabulous speech to the American Legion. Notice the Junk Media barely even mentioned it? And of course do any of the usual whiner even mention the Speech. Is there an echo chamber to pick up and repeat the points in the speech? NO instead we get the same old whining from the usual suspects in the Conservative Establishment. "Why doesn't Bush fight back"? He is and MAYBE ONE time the usual fraggers MIGHT shoot at our common foes INSTEAD of spending ALL their time shooting Bush in the back???