Gary Sinise

Harry S Truman

Diana Scarwid

Bess Truman

Richard Dysart

Henry L. Stimson

Colm Feore

Charlie Ross

James Gammon

Sam Rayburn

Tony Goldwyn

Clark Clifford

Pat Hingle

Boss Tom Pendergast

Harris Yulin

Gen. George C. Marshall

Leo Burmester

Frank Vassar

Amelia Campbell

Margaret Truman

Virginia Capers

Elizabeth Moore

John Finn

Bob Hannagan

Željko Ivanek

Eddie Jacobsen

David Lansbury

Lt. Jim Pendergast

Remak Ramsay

Dean Acheson

Marian Seldes

Eleanor Roosevelt

Lois Smith

Madge Wallace Gates

Daniel von Bargen

General MacArthur

Winston Churchill

Self (archive footage) (uncredited)

Lee Richardson

Franklin D. Roosevelt (uncredited)

Harry Gibbs

Vice-President Garner

Jessica Drake

Woman Reporter

Addison Myers

Operator

Michael Murphy

Dinner Speaker (uncredited)

Jason Ray

Soldier (Uncredited)

Nora Denney

Mama Truman