"[T]he main factors that are causing federal health care spending to grow much faster than the economy: [1] The U.S. population is aging; [2] Health care costs per person have risen substantially over time, and that trend is likely to continue; [3] The federal government is expanding its subsidies for health insurance through the [ACA]; that expansion will significantly reduce the number of people without health insurance. [The presentation then] summarized CBO's analysis of a wide range of possible approaches in Health-Related Options for Reducing the Deficit: 2014 to 2023."