Of course the White House thinks their study is not credible:
The White House possesses no archived e-mail messages for many of its component offices, including the Executive Office of the President and the Office of the Vice President, for hundreds of days between 2003 and 2005, according to the summary of an internal White House study that was disclosed yesterday by a congressional Democrat.
The 2005 study — whose credibility the White House attacked this week — identified 473 separate days in which no electronic messages were stored for one or more White House offices, said House Oversight and Government Reform Committee Chairman Henry A. Waxman (D-Calif.).
This goes hand in hand with the White House saying that they don’t believe any emails are missing. So then they are just ignoring the law and rulings from the court? That sounds like either a misdemeanor or a high crime to me.