The Efficiency Movement of the United States, was a major part of the Progressive Era. The ideology championed by those who supported this movement, was that the society, government and the economy contained unwanted elements that bogged things down. In order to cleanse the system, experts must be appointed to identify the errors and to fix them.
Hoover was a prominent figure who championed this movement. He held the view that the economy could be fixed and made better by coming up with technical solutions. However, it so happened that the Great Depression started in 1929, during the first year of Hoover's tenure as President. Since his ideology that the economy could be fixed, could not work in such a situation, he was the centre of criticism and mistrust.
Herbert Hoover was a reformer and believed in improving the condition of livelihood of the citizens. He denounced the laissez-faire system and believed in regulating bills through Congress. In addition to this, he also supported volunteerism.