Randy Evan Barnett is an American legal scholar. He serves as the Patrick Hotung Professor of Constitutional Law at Georgetown University, where he teaches constitutional law and contracts, and is the director of the Georgetown Center for the Constitution.

National Federation of Independent Business v. Sebelius, 567 U.S. 519 (2012), is a landmark United States Supreme Court decision in which the Court upheld Congress's power to enact most provisions of the Patient Protection and Affordable Care Act (ACA), commonly called Obamacare, and the Health Care and Education Reconciliation Act (HCERA), including a requirement for most Americans to pay a penalty for forgoing health insurance by 2014. The Acts represented a major set of changes to the American health care system that had been the subject of highly contentious debate, largely divided on political party lines.