Health care issuers are already interested in a proposal that would allow Americans age 55 and older to “buy into” Medicare, according to Chris Jennings, a longtime health policy expert and adviser to Democratic presidential nominee Hillary Clinton. Jennings spoke on a panel during the Democratic National Convention featuring several prominent health policy players, including former Senate Majority Leader Tom Daschle (D-SD), Center for American Progress President Neera Tanden, Families USA Executive Director Ron Pollack and former head of the...