A group of eight senators, including Democratic presidential candidate Bernie Sanders (VT), is asking President Barack Obama to include provisions to lower prescription drug costs in his upcoming fiscal 2017 budget, and point to Medicare drug price negotiations as one policy solution that could help bring down those costs. Officials with Pew Charitable Trusts, however, say before HHS could negotiate drug prices, policymakers would need to lay out a number of details, including the scope of the government's authority, the...