The reason Republicans tended to defend Roger Clemens and Democrats tended to attack him when he testified in Congress is that the Republican Party is the party of lies, pure and simple. They have made such a habit of obfuscation, of disingenuousness, of hypocrisy; of outright, craven dissembling, often in the name of absurd, abstract notions like honor and one's good name, that they don't even know themselves anymore. And when they see a liar before them they viscerally, emotionally identify with him. He was perfect for them - pompous, indignant, headstrong, unintellectual - and they responded like the Pavlov dogs they've become; they drooled over him. They are constitutionally disinclined to the truth.