Robert Scheer is asking the Question:

What did the president know and when did he know it?

The answer to that question forced the resignation of Richard Nixon as he was about to be impeached.

Now, with President Bush facing that same question, congressional Republicans have circled the wagons to prevent a public hearing on whether intelligence was distorted by the White House to convince us of the need for war. Why? Because public hearings could lead to public demands for impeachment. Sound far-fetched? Not when you consider the gravity of the charge.

"To put it bluntly," former Nixon White House counsel John Dean wrote on the legal Web site FindLaw on June 6, "if Bush has taken Congress and the nation into war based on bogus information, he is cooked. Manipulation or deliberate misuse of national security intelligence data, if proven, could be 'a high crime' under the Constitution's impeachment clause. It would also be a violation of federal criminal law, including the broad federal anti-conspiracy statute, which renders it a felony 'to defraud the United States, or any agency thereof in any manner or for any purpose.'