After all, if he thought Libby was innocent then why didn't he give him a full pardon?
In his letter accompanying the commutation, Bush praises the jury that convicted Libby of perjury, lying to the FBI and obstruction of justice. That means that Bush thinks Libby committed perjury, lied to the FBI and obstructed justice. He must, otherwise he wouldn't praise the work of the jury!
Bush let out of jail someone he believes is guilty.
It is time for Congress to ask why.