The Affordable Care Act (ACA), enacted in 2010, is a comprehensive healthcare reform law in the United States. Its main goals are to increase health insurance coverage, lower healthcare costs, and improve the quality of care. The ACA provides subsidies to help individuals and families afford insurance and expands Medicaid eligibility for low-income individuals. The ACA also established health insurance marketplaces, where people can compare and purchase plans. It includes provisions that prevent insurance companies from denying coverage due to pre-existing conditions and allows young adults to stay on their parents' insurance until age 26.