At a recent Budget Committee hearing on curbing the federal deficit, I questioned John Podesta, President of the Center for American Progress and Robert Greenstein, Executive Director of the Center on Budget and Policy Priorities, about the importance of reviewing tax expenditures as well as direct expenditures. It is not enough to control direct spending programs, we must also control less transparent spending through the Tax Code. When we look at a lake level down in Central Texas, we consider not only the water that is flowing out, but also the water that is flowing in.