About 24 million people are expected to lose health-care coverage by 2026 under Republicans' plan to repeal and replace parts of Obamacare, according to the nonpartisan Congressional Budget Office.

Even though it was expected, the coverage-loss estimate is a sweeping blow to President Donald Trump and fellow Republicans, who are trying to push the legislation through the House and Senate without Democratic support. They have pre-emptively argued that the CBO score isn't as important as what they say will be less-expensive coverage options under their plan.

The CBO, the official scorekeeper of the budgetary effects of proposed legislation, also said the GOP proposal would reduce the deficit by $337 billion over the next decade.