Via the Washington Post:
Bush administration officials unveiled a bold new assertion of executive authority yesterday in the dispute over the firing of nine U.S. attorneys, saying that the Justice Department will never be allowed to pursue contempt charges initiated by Congress against White House officials once the president has invoked executive privilege.
The position presents serious legal and political obstacles for congressional Democrats, who have begun laying the groundwork for contempt proceedings against current and former White House officials in order to pry loose information about the dismissal
Under federal law, a statutory contempt citation by the House or Senate must be submitted to the U.S. attorney for the District of Columbia, "whose duty it shall be to bring the matter before the grand jury for its action."
But administration officials argued yesterday that Congress has no power to force a U.S. attorney to pursue contempt charges in cases, such as the prosecutor firings, in which the president has declared that testimony or documents are protected from release by executive privilege.
The White House did not comment on Congress' inherent contempt power, which allows the Congress to enforce subpoenas without relying on the Executive branch. The Congressional Research Service explains:
Under the inherent contempt power, the individual is brought before the House or Senate by the Sergeant-at-Arms, tried at the bar of the body, and can be imprisoned. The purpose of the imprisonment or other sanction may be either punitive or coercive. Thus, the witness can be imprisoned for a specified period of time as punishment, or for an indefinite period (but not, at least in the case of the House, beyond the adjournment of a session of the Congress) until he agrees to comply. The inherent contempt power has been recognized by the Supreme Court as inextricably related to Congress’s constitutionally-based power to investigate. Between 1795 and 1934 the House and Senate utilized the inherent contempt power over 85 times, in most instances to obtain (successfully) testimony and/or documents. The inherent contempt power has not been exercised by either House in over 70 years. This appears to be because it has been considered too cumbersome and timeconsuming to hold contempt trials at the bar of the offended chamber. Moreover, some have argued that the procedure is ineffective because punishment can not extend beyond Congress’s adjournment date.