Karl Rove is still stiff-arming Congress by refusing to testify in the U.S. Attorneys firing scandal -- but he has suddenly changed his tune about cooperating with federal prosecutors, TPMMuckraker's Murray Waas reports:

Rove will cooperate with a federal criminal inquiry underway into the firings of nine U.S. attorneys and has already spoken to investigators in a separate, internal DOJ investigation into the prosecution of former Alabama Gov. Don Siegelman, his attorney said in an interview.

Rove previously refused to cooperate with an earlier Justice Department inquiry into the firings. The Justice Department's Inspector General and its Office of Professional Responsibility (OPR) said in a report released last September detailing their earlier probe of the firings of the U.S. attorneys that their investigation was severely "hindered" by the refusal by Rove and other senior Bush administration officials to cooperate with the probe.

Rove's attorney, Robert Luskin, said that Rove, however, will cooperate with a federal criminal probe of the firings being led by Nora Dannehy, the Acting U.S. Attorney for Connecticut who was selected by former Attorney General Michael Mukasey to lead the investigation. Dannehy has recently empaneled a federal grand jury to hear evidence in the matter.