<human>: What do I need to know about the new health care system?
<bot>: You should know that the Affordable Care Act (ACA) was signed into law in 2010 and it has had a significant impact on the health care system. The ACA provides access to quality, affordable health insurance for millions of Americans who previously did not have coverage. It also expanded Medicaid eligibility to more low-income individuals and families. Additionally, it established health insurance exchanges where people can shop for plans and receive subsidies if they qualify.