Christopher Plummer as John Marshall Harlan

Frank Langella as Chief Justice Warren Burger

Ed Begley Jr. as Justice Harry Blackmun

Peter Gerety as William Brennan

Barry Levinson as Justice Potter Stewart

John Bedford Lloyd as Byron 'Whizzer' White

Fritz Weaver as Hugo Black

Harris Yulin as William O. Douglas

Danny Glover as Justice Thurgood Marshall

Benjamin Walker as Kevin Kennedy

Pablo Schreiber as Covert Becker

Ben Steinfeld as Sam Edelstein

Dana Ivey as Mrs. Paige

Kathleen Chalfant as Ethel Harlan

Lisa Joyce as Donna Connolly

Peter McRobbie as Erwin Griswold

Damian Young as Ramsey Clark

Chuck Cooper as Chauncey Eskridge

Victor Slezak as Marshal of the Court

Allie Woods Jr. as Petrus, Burger's Valet

Charlie Hewson as Burger's Clerk

Justin Swain as Burger's Second Clerk

Max Spitulnik as Blackmun's Clerk

Nate Dern as Blackmun's Second Clerk

James Francis Ginty as Brennan's Clerk

Will Cart as White's Clerk

Matt Stadelmann as Black's Clerk

Christopher McLinden as Black's Second Clerk

Keith Nobbs as Douglas's Clerk

Drew Gehling as Marshall's Clerk

Rachel Claire as Edelstein's Wife

Alex Dreier as Edelstein's Son

Greg Connolly as Doctor

Amy Tribbey as Nurse

Jon Gabrus as Stoned Clerk

Steven Hauck as Maitre D'

Pamela Stewart as Librarian

Kerry Malloy as Vietnam Vet

Ed Jewett as Tourist

Lizan Mitchell as Housekeeper

Mary Mulligan as Court Officer

Cameron Taylor as Black's Secretary

John Thomas Waite as Messenger

Bob Balaban as Lawyer (uncredited)

Muhammad Ali as Himself (archive footage)

Caroline Christl Long as Court Librarian

Andy Volin as Reporter