This document maps out each U.S. state's response and stance regarding key aspects of the Affordable Care Act, also known as Obamacare, including whether they have decided to expand Medicaid, who will run their health insurance exchange, and whether they are plaintiffs in any lawsuits against the law. The maps show that 25 states have decided to expand Medicaid, 20 have not, and 6 are uncertain. 18 states will run their own exchange, 7 as a state-federal partnership, and 26 will default to the federal exchange. 27 states in total are involved in lawsuits against Obamacare.