U.S. Attorney Smoking gun?

Interesting timeline from the most recent document dump:

From: Hertling, Richard
Sent: Monday, March 05 15:48:29 2007
To: Burton, Faith
Subject: Re: URGENT

What is the correct response if at the US Attorney hearing tomorrow Will is asked by HJC to provide e-mails and other communications we had with the WH on firing US Attorneys?

From: Burton, Faith
Sent: Monday, March 05 16:03:43 2007
To: Hertling, Richard
Subject: Re: URGENT

We would not provide such highly deliberative docs in which the WH has such significant equities – no way would the WH allow that. Need to think about how exactly to phrase the response but Will may have some thoughts.

From: Hertling, Richard
Sent: Monday, March 5, 2007 4:05PM
To: Burton, Faith
Subject: Re: URGENT

Will is our witness. Think about how we would want to frame an answer.

March 6th:

JOHNSON: And were there memoranda or record of these meetings or e-mails or other communications on the subject that were generated?
MOSCHELLA: I don't know of any memoranda that was created. At some point, names were put on a list, but I don't know about the specific records....
JOHNSON: Mr. Moschella, I'm getting ready to run out of time and I want to ask you this question.
The committee is very interested in further inquiry into this matter. Can I have your assurance that you'll make available to the committee the individuals I have asked you about and all memoranda, e- mails and other documents on this subject as was asked by myself and previous questioners? Can I get your commitment on that?
MOSCHELLA: Congressman, we have done everything we can to cooperate, including providing documents to the committee, having the briefings. We'll continue to work with you.

March 7th:

On the Withheld Documents list, we see:

Line 160, From Faith Burton, DESCRIPTION: Discussion re: draft subpoenas for KS (Kyle Sampson), MG (Monica Goodling), ME (Michael Elston), WM (William Mercer), and MB (Michael Battle).
Line 161, From William Moschella, DESCRIPTION: Discussion re: voluntary interviews or testimony from leadership staff before the SJC (Senate Judiciary Committee).
Five of those on the list for receipt of subpoenas receive two e-mails from Faith Burton and William E. Moschella "discussing" the subject of their subpoenas.