From the front page of the Washington Post:

  Attorney General Alberto R. Gonzales has retreated from public view this week in an intensive effort to save his job, spending hours practicing testimony and phoning lawmakers for support in preparation for pivotal appearances in the Senate this month, according to administration officials.
  After struggling for weeks to explain the extent of his involvement in the firings of eight U.S. attorneys, Gonzales and his aides are viewing the Senate testimony on April 12 and April 17 as seriously as if it were a confirmation proceeding for a Supreme Court or a Cabinet appointment, officials said.
  Ed Gillespie, a former Republican National Committee chairman, and Timothy E. Flanigan, who worked for Gonzales at the White House, have met with the attorney general to plot strategy. The department has scheduled three days of rigorous mock testimony sessions next week and Gonzales has placed phone calls to more than a dozen GOP lawmakers seeking support, officials said.
  . . .
  "In a sense, this is even more difficult than a confirmation hearing, because you are defending a record that has been assailed publicly and it involves other members of Justice who are also going to be called," said former senator Daniel R. Coats (R-Ind.), who led confirmation preparations for Supreme Court Justice Samuel A. Alito Jr. and former White House counsel Harriet E. Miers.
  "It just compounds the difficulty facing any witness in this situation," Coats said. "You don't have the ability to coordinate with other organizations or individuals that are going to be testifying, and there will be a lot of people looking for inconsistencies. It is no small challenge for the attorney general."

  When it's such a major challenge for an Attorney General to testify truthfully about what he himself did, it's probably time to get a new Attorney General.