Lee C. Bollinger served as Columbia University's 19th president from 2002 to 2023. He is Seth Low Professor of the University, a member of the Columbia Law School faculty, and one of the nation's foremost First Amendment scholars.Geoffrey R. Stone is the Edward H. Levi Distinguished Service Professor at the University of Chicago. Mr. Stone joined the faculty in 1973, after serving as a law clerk to Supreme Court Justice William J. Brennan, Jr. He is a preeminent constitutional law scholar.