Question Title Q: The Congressional Budget Office analyzed the impact of switching Medicare to a premium-support system like the one being proposed by House Republicans. CBO found that a program, in which a premium-support payment was based on the average bid of participating plans, would ... Increase average premiums by 47 percent in 2020. Increase premiums by 30 percent in 2020. Decrease average premiums by 6 percent in 2020. Next