In January 2017 King voted against the Republican Senate budget plan to accelerate repeal of the ACA and block repeal legislation from being filibustered; the measure passed on a largely party line 51–48 vote. He spoke out against the House Republican repeal legislation, noting that the Congressional Budget Office estimated that 14 million Americans would lose health insurance if the legislation were enacted. Of the House Republican bill, King said, "If you were designing a bill to hammer my state, it would be this bill," adding that it would most adversely affect Maine residents between the ages of 50 and 65.