Medicare Part D -- the government health insurance program's prescription drug benefit -- is used by tens of millions of older or disabled beneficiaries.
With President-elect Donald Trump's recent announcement of former surgeon-turned-TV host Dr. Mehmet Oz to lead the Centers for Medicare and Medicaid Services (CMS), questions are swirling about whether changes could be coming to the government programs.
More than 67 million Americans are enrolled in Medicare and choosing a plan this year is tougher because certain plans aren't available anymore.
Medicare is not allowed by law to cover drugs for chronic weight management, although Congress is facing pressure to change that.
A government shutdown could snarl airline travel, particularly if it lasts into December
The federal government will take a first-ever step: negotiating those drugs' prices directly with manufacturers.