The Affordable Care Act (ACA), also known as Obamacare, was signed into law in 2010 with the aim of expanding access to affordable health insurance coverage and improving the overall quality of healthcare in the United States. Some of the benefits of the ACA include:

The ACA expanded access to health insurance by creating health insurance marketplaces where individuals and small businesses can purchase coverage, expanding Medicaid to cover more low-income Americans, and allowing young adults to stay on their parents' insurance until age 26.

The ACA requires health insurance plans to cover preventive care services, such as cancer screenings, flu shots, and wellness visits, without any out-of-pocket costs to the patient.

Prior to the ACA, insurance companies could deny coverage to people with pre-existing conditions, such as diabetes or cancer. The ACA prohibits insurance companies from denying coverage based on pre-existing conditions.

The ACA implemented a number of cost-control measures, such as the creation of an independent panel to oversee Medicare spending, encouraging the use of electronic health records, and promoting the adoption of alternative payment models that reward doctors for keeping their patients healthy instead of just treating them when they're sick.

The ACA includes provisions that encourage healthcare providers to focus on quality of care and patient outcomes, rather than the quantity of services provided. This has led to improved coordination of care, reduced hospital readmissions, and better management of chronic conditions.