Arnold gained significant recognition with his lead role as a powerful newspaper editor in Okay America!. This performance showcased his authoritative screen presence and helped establish him as a prominent character actor in the sound era.
1935
His career truly soared with the titular role in Diamond Jim. This biographical film about the flamboyant financier Diamond Jim Brady established Arnold as a top-billed star, known for portraying larger-than-life, powerful figures.
1939
Arnold cemented his reputation as a formidable antagonist with his portrayal of corrupt political boss Jim Taylor in Frank Capra's Mr. Smith Goes to Washington. This iconic performance further solidified his typecasting as a powerful, often villainous, figure in acclaimed dramas.