Gabriel Over The White House (1933)

When Judson Hammond (Walter Huston) is elected United States president during the Great Depression, he's seen by many as a hands-off, please-everyone type. After an astounding recovery from a car accident, however, Hammond awakes a changed man. Instituting sweeping, radical changes to the government -- including the dissolution of Congress and the revoking of the Constitution -- Hammond somehow manages to bring order to the country through dictatorship, along with world peace.