Think Progress has the transcript. Now, Bush can't talk during an investigation either. Could last year, can't this year.
Update: AP claims Bush was supposed to show support for Rove, but didn't, hmmm:
Bush's statement was a surprise for some White House advisers and senior Republicans who had expected the president to deliver a vote of confidence for Rove, his deputy chief of staff. Two Bush advisers, speaking on condition of anonymity because he was poised to speak for himself at the Cabinet meeting, said shortly before his remarks that the president intended to signal his support of Rove - without prejudging the merits of the case - during that picture-taking session. Indeed, they said, he was prepared to do so a day earlier but the question was not posed in the question-and-answer session Tuesday.