The Affordable Care Act (ACA), also known as Obamacare, is a comprehensive healthcare reform law enacted in the United States in 2010. Its primary goals are to increase health insurance coverage, improve healthcare quality, and reduce healthcare costs. The ACA introduced measures such as the expansion of Medicaid, the establishment of health insurance marketplaces, and the requirement for individuals to have health insurance or face a penalty. The ACA also includes provisions to protect consumers, such as prohibiting insurance companies from denying coverage due to pre-existing conditions. Additionally, it allows young adults to stay on their parents' insurance plans until age 26. Overall, the ACA aims to make healthcare more accessible and affordable for millions of Americans.