Eric Posner

In 2015, Posner co-founded the book review The New Rambler. Posner's position concerning the heightened standing of the Executive branch of government was criticized in 2016 by Jeremy Waldron in his book Political Political Theory as not sufficiently sensitive to issue of legislative priorities. In 2018, Posner co-wrote an article advocating a system of market-oriented, privately sponsored work visas as a supplement to U.S. immigration policy.

In June 2013, Posner and Jameel Jaffer, fellow at the Open Society Foundations, participated in The New York Times Room for Debate series. Posner responded to concerns about expanded National Security Agency (NSA) programs that vacuum information about the private lives of American citizens. Those who oppose the surveillance claim that the collection and storing of unlimited metadata is a highly invasive form of surveillance of citizens' communications. Posner claimed that Americans obtain the services they want by disclosing private information to strangers such as doctors and insurance companies. Posner in 2013 argued that since 2001 there had not been a single instance of "war-on-terror-related surveillance in which the government used information obtained for security purposes to target a political opponent, dissenter or critic".

Posner's published books have ranged over several topics including international law, foreign relations law, contracts, and game theory and the law. In 2005, Posner posted about the trial of the deposed Iraqi president Saddam Hussein.

Posner started his teaching career at the University of Pennsylvania Law School from 1993 to 1998. In 1998, Posner joined the University of Chicago Law School where is now the Kirkland and Ellis Distinguished Service Professor of Law. He has also been a visiting professor at Columbia Law School and NYU School of Law. From 1998 to 2011, he was an editor of The Journal of Legal Studies. He is the author or co-author of many books and articles, on subjects including international law, cost-benefit analysis, and constitutional law.

Posner attended Yale University (B.A. and M.A. degrees in philosophy, summa cum laude) and received his J.D. degree from Harvard Law School, magna cum laude) in 1991. He clerked for Judge Stephen F. Williams of the D.C. Circuit.

Eric Andrew Posner (/ˈ p oʊ z n ər / ; born December 5, 1965) is an American law professor at the University of Chicago Law School. He teaches international law, contract law, and bankruptcy, among other areas. As of 2014, he was the 4th most-cited legal scholar in the United States. He is the son of retired Seventh Circuit Judge Richard Posner.