What are the major components of the affordable care act?

The Affordable Care Act (ACA) includes several key components: it expands Medicaid eligibility to cover more low-income individuals, establishes health insurance marketplaces for consumers to compare and purchase insurance plans, and mandates that insurers cannot deny coverage based on pre-existing conditions. Additionally, the ACA requires most Americans to have health insurance or pay a penalty, and it introduces subsidies to help lower-income individuals afford coverage. It also emphasizes preventive care by requiring insurance plans to cover certain preventive services at no cost to the patient.