The decision to display presidential contempt for the justice system was made "alone":
For the first time in his presidency, Bush commuted a sentence without running requests through lawyers at the Justice Department, White House officials said. He also did not ask the chief prosecutor in the case, Patrick J. Fitzgerald, for his input, as routinely happens in cases routed through the Justice Department's pardon attorney.
Under the circumstances, it's clear that Cheney was involved. When there are no normal channels of governance in this White House, it means the fusion of Cheney-Bush acting as extra-legal agents of their own power. We really no longer have the rule of law operating. We have the privileges and lies and policies of two men. The law is no competitor. And shamelessness is their ally.