Cass Robert Sunstein is a distinguished American legal scholar specializing in a wide array of fields including constitutional law, administrative law, environmental law, and behavioral economics. He has authored several influential books, including the New York Times bestsellers The World According to Star Wars (2016) and Nudge (2008), which have significantly impacted public discourse and policymaking.

Sunstein served as the Administrator of the White House Office of Information and Regulatory Affairs under President Barack Obama from 2009 to 2012, bringing his academic expertise to the heart of US governance. His tenure as a professor at the University of Chicago Law School spanned an impressive 27 years, where his writings greatly contributed to the study of regulatory and constitutional law.

Following his role in the Obama administration, Sunstein accepted a position at Harvard Law School as the Robert Walmsley University Professor. His prolific career in legal scholarship is reflected in his status as the most frequently cited American legal scholar, a testament to his profound influence on legal studies.