She is also an Associate Member of the University of Chicago Department of History.
LaCroix attended Yale College for her Bachelor of Arts degree in history, where she served as managing editor of the Yale Daily News and graduated summa cum laude in 1996.
[2] Prior to joining the faculty at the University of Chicago Law School in 2006, LaCroix was an attorney at the New York law firm of Debevoise & Plimpton.
[1] She received tenure from the University of Chicago in 2011 and, in 2017, was awarded a National Endowment for the Humanities Fellowship in U.S. History for her project entitled, The Interbellum Constitution: Union, Commerce, and Slavery from the War of 1812 to the Civil War.
[3] On April 9, 2021, LaCroix was named a Commissioner on the Presidential Commission on the Supreme Court of the United States.