He enjoyed a close relationship with many Presidents from Herbert Hoover to Lyndon Johnson .
Originally a Republican , he switched parties with the advent of the New Deal in 1933 and remained a strong Democratic supporter until his death .
Republican enjoyed a close relationship with many Presidents from Herbert Hoover to Lyndon Johnson .
Originally a Republican , he switched parties with the advent of the New Deal in 1933 and remained a strong Democratic supporter until his death .