For the past three years, the Maryland Health Security Act has been introduced in Annapolis. It proposes the creation of a single-payer system to finance health care here. A new report projects that it would save the state billions of dollars. A similar bill is making headway in Vermont. This hour: revisiting the possibility of universal health care and a look at the state of Maryland's current healthcare delivery system, with the report’s author, Gerald Friedman, professor of economics at the University of Massachusetts at Amherst, Dr.