SHOWDOWNObama brings down the hammer on health care reformhttp://www.dailykos.com/storyonly/2009/7/18/754715/-Obama:-Seize-opportunity-for-health-reform,-or-lose-it-for-a-generation“That’s why any plan I sign must include an insurance exchange: a one-stop shopping marketplace where you can compare the benefits, cost and track records of a variety of plans – including a public option to increase