Frankfurter's work in Washington had impressed the faculty at Harvard Law School, who used a donation from the financier Jacob Schiff to create a position for him there after Louis Brandeis suggested that Schiff do this. He taught mainly administrative law and occasionally criminal law. With fellow professor James M. Landis, he advocated judicial restraint in dealing with government misdeeds, including greater freedom for administrative agencies from judicial oversight. He also served as counsel for the National Consumers League, arguing for Progressive causes such as minimum wage and restricted work hours. He was involved in the early years of "The New Republic" magazine after its founding by Herbert Croly.