Protestors carry signs as they demonstrate against proposed cuts to Medicaid programs outside San Francisco city hall on Sept. 21, 2011. Photo by Justin Sullivan/Getty Images The future of Medicaid -- the state-federal workhorse of the nation's health system that…

Republican vice presidential hopeful U.S. Rep. Paul Ryan (R-WI) speaks at a campaign event at Walsh University on Thursday in North Canton, Ohio. GOP presidential candidate Mitt Romney's choice of House Budget Committee Chairman Paul Ryan, R-Wis., as his running…