Congress Above the law

David Limbaugh on Dennis Hastert's overreaction to the FBI seizing documents from Representative William Jefferson's office:

The Constitution establishes a government of laws, not men; and no men, including government officials, are above the law. While legislators are bellyaching about the excessive authority of the executive branch, they are, in essence, arguing for excessive authority and privilege for members of their branch. We have no kings. We have no royalty among legislators. If they are suspected of violating the law, the executive branch has an obligation to investigate and to employ its full powers in doing so -- including that of reasonable searches of their offices and seizures of their relevant effects...
To argue that individual congressmen are not subject to search and seizure by agencies of the executive branch because that would give the executive branch undue power is preposterous. Who else is supposed to conduct such searches?