They've got muck; we've got rakes. TPM Muckraker
"In addition, while the Senate has called for an investigation, the House undoubtedly will do everything possible to stymie such an inquiry. The House takes an expansive view of the breadth of the Speech or Debate clause. Recently, for example, the House counsel's office sought to quash a Justice Department subpoena issued to a former Appropriations committee staff member in connection with the criminal investigation into Rep. Jerry Lewis's (R-CA) earmarks. The House likely will assert the same arguments here.
Given this impediment to a criminal probe, Senator Coburn's suggestion that a bicameral committee investigate the matter might have been more likely to reveal the facts, but sadly neither the House nor the Senate have a strong track record of policing and punishing the illegal or unethical conduct of their members. This situation perfectly illustrates why Congress needs an indepent ethics office -- with subpoena power -- to investigate members. The American public needs to have confidence that members of Congress are held accountable for their illegal and unethical conduct. Today's vote is nothing more than Kabuki theater given the likely constitutional impediment to a Justice Department investigation."