Look at it this way: If you are the first one on your block to turn State's Evidence, maybe you can get off with only a light sentence. But if you wait too long, guys, you will get the finger pointed at YOU!
Republicans! You can already see which way the wind is blowing. First come impeachments. Then come indictments. Be the first one in your gang to become Andrew Fastow! Don't just sit around twiddling your thumbs until you end up like poor Jeffrey Skilling. Don't wait until federal marshals come to your door with a warrant. Turn State's Evidence now! Cough up the details of all those juicy backroom deals you made with Halliburton and DeLay and Abramoff and Karl. "George Bush made me do it!"
Who will be the first in the Bush bureaucracy to save his own hide and sing like a canary in order to avoid jail time? I'm betting that it will be Paul Wolfowitz. Who do you think will crack first? Anton Scalia? Alberto Gonzales? Or George Bush himself....
"I didn't do it. I didn't steal all those votes. I didn't plan 9-11. Karl ROVE made me do it!" Whatever you say, George.