because this admin doesn't believe is obeying the law

DoJ refuses to enforce contempt citations.

Today, Attorney General Michael Mukasey “rejected referring the House’s contempt citations against two of President Bush’s top aides to a federal grand jury. Mukasey says they committed no crime.” Mukasey claimed that White House Chief of Staff Josh Bolten and former counsel Harriet Miers “were right” to ignore Congress’s subpoenas in the U.S. attorney scandal.

UPDATE: House Speaker Nancy Pelosi (D-CA) outlines the next steps:

Anticipating this response from the Administration, the House has already provided authority for the Judiciary Committee to file a civil enforcement action in federal district court and the House shall do so promptly.

(Think Progress)