 Hoover's attempts at regulating radio were not supported by all congressmen, and he received much opposition from the Senate and from radio station owners.Hoover was also influential in the early development of air travel, and he sought to create a thriving private industry boosted by indirect government subsidies.He encouraged the development of emergency landing fields, required all runways to be equipped with lights and radio beams, and encouraged farmers to make use of planes for crop dusting.