In March 2017, House Republicans unveiled the American Health Care Act (AHCA), their proposal to replace the Affordable Care Act (ACA). On May 4, the U.S. House of Representatives passed AHCA by a vote of 217-213. On March 13, the U.S. Congressional Budget Office projected that under AHCA (as introduced), 14 million Americans would lose their health insurance in 2018, with the number of uninsured rising to 24 million by 2026. The Congressional Budget Office will be updating their score of this legislation to account for several amendments that were adopted in the House-passed version of the bill. The following summarizes key AHCA provisions and who is primarily affected.