"In addition, former FBI Director William H. Webster and four former U.S. attorneys general--Griffin P. Bell, Benjamin R. Civiletti, Richard L. Thornburgh and **William P. Barr**--filed a friend-of-the-court brief supporting immunity from prosecution for Horiuchi." https://www.latimes.com/archives/la-xpm-2000-jun-15-mn-41294-story.html