My model of this is it's more of a show of power by Congress - hey we can make you come here and you have to answer our questions, and we get to show our consti

My model of this is it's more of a show of power by Congress - hey we can make you come here and you have to answer our questions, and we get to show our constituents we have you under control and you are answering to us. Is that the right model? Is there anything helpful that'd come of this testimony?