If Congress fails to comprehensively reform Medicare, seniors will miss out on significant savings, and taxpayers will miss out on the opportunity to slow the program’s cost growth.In an interview with “Good Morning America” on Wednesday, House Speaker Paul Ryan (R-WI) cast doubt on the prospect for comprehensive Medicare reform on the congressional agenda in 2018: “There are some provider issues that we may be addressing as you know. Some providers in the Medicare field in some cases are getting overpaid. We want to make sure that’s being dealt with. But as far as you’re talking about beneficiaries, we’re not...