Human: I've been hearing a lot about the new health care law. What does it mean? Assistant: 
The Affordable Care Act is a series of laws that will expand access to affordable health insurance in the United States. It was signed into law by President Obama on March 23, 2010 and went into effect in 2014. The goal of the ACA is to provide affordable health coverage for all Americans, regardless of their income or pre-existing medical conditions. The main provisions of the ACA include: requiring most Americans to have health insurance; providing subsidies to help low-income individuals purchase health insurance; expanding Medicaid eligibility to cover more people; creating an online marketplace where consumers can compare plans and buy insurance; and prohibiting insurers from denying coverage due to pre-existing conditions.