Judge Sack is a United States Circuit Judge of the U.S. Court of Appeals for the Second Circuit. At the time of his appointment in 1998, he was in private law practice as a partner in the New York office of Gibson, Dunn & Crutcher. Judge Sack received his B.A. degree from the University of Rochester in 1960, and his LL.B. degree from Columbia Law School in 1963.