Harry S. Truman

Gary Sinise

Bess Truman

Diana Scarwid

Henry L. Stimson

Richard Dysart

Charlie Ross

Colm Feore

Clark Clifford

Tony Goldwyn

Sam Rayburn

James Gammon

Gen. George C. Marshall

Harris Yulin

Boss Tom Pendergast

Pat Hingle

Frank Vassar

Leo Burmester

Margaret Truman

Amelia Campbell

Elizabeth Moore

Virginia Caper

Elizabeth Moore

Virginia Capers

Dean Acheson

Remak Ramsay

Gen. Douglas MacArthur

Daniel von Bargen

Bob Hannagan

John Finn

Madge Wallace Gates

Lois Smith

Eddie Jacobsen

Željko Ivanek

Lt. Jim Pendergast

David Lansbury

Eleanor Roosevelt

Marian Seldes

Franklin D. Roosevelt (uncredited)

Lee Richardson

J. Lester Perry

Richard Venture

Himself (archive footage) (uncredited)

Winston Churchill

Marine

Craig Benton

Vice-President Garner

Harry Gibbs

Engineer

Jim Birdsall

Woman Reporter

Jessica Drake

Alonzo

Freeman Bosley Sr.

Delegate

Walter Coppage

Operator

Addison Myers

Mama Truman

Nora Denney

Dinner Speaker (uncredited)

Michael Murphy

Producer

John Durbin

Lazy Worker

Joe Erker

Newswoman

Peggy Friessen

MacArthur Reporter

David Fritts

MacArthur's Officer

Tim Gillin

Ike Aide

Larry Greer

Senator #1

Wiley Harker

Convention Reporter #1

Marlon Hoffman

First Politician

Harold Herd

Senator #2

Gary Holcombe

Sgt. O'Hare

Hollis Houston

Judge Vrooman

Jerry Longe

Fred Wallace

Joseph Moynihan

Dixicrat

Holmes Osborne

Barnett

Jerel Taylor