Calling the rising cost of drugs "unsustainable," congressional advisers on Wednesday recommended major changes to Medicare's popular outpatient prescription program, now 10 years old. The proposal from the nonpartisan Medicare Payment Advisory Commission, or MedPAC, steers clear of calling for the government to negotiate drug prices directly, an option both presidential candidates advocate. For beneficiaries, the plan is a mixed bag. All seniors would get better protection from extremely high costs, but some may have to spend more. The recommendations are unlikely to gain traction in Congress during an election year, but they will get a serious look from staff...