Human: I've been hearing a lot of talk about the new health care law. I don't know what it is or how it will affect me. Can you tell me about it? Assistant: 
The Affordable Care Act (ACA) was signed into law in 2010, and it has had a significant impact on the health insurance industry since then. It requires that all Americans have health insurance or pay a penalty, and it provides subsidies to help people afford coverage. It also expands Medicaid eligibility, increases access to preventive services, and makes other changes to improve quality and lower costs.