The White House’s announcement of the intended nominations of Travis LeBlanc and Aditya Bamzai to be members of the Privacy and Civil Liberties Oversight Board is a welcome development for this low-profile but increasingly significant board. The planned nomination of Bamzai, a UVA law professor and former lawyer at the Justice Department’s Office of Legal Counsel and National Security Division, to be a fifth member helps ensure partisan balance; it indicates that Elisebeth Collins will be leaving the board since Bamzai would have to fill her seat. This enables pairing LeBlanc with a Republican...