Unlike Grant and McKay, Clark was "less enthusiastic" about Jews, having had some unhappy experiences while living in the Eastern United States, according to his son. Like many others at the time, Clark's anti-Semitism was personal and political, not religious or racial. He thought, as he told President Herbert Hoover, that Jews were "essentially revolutionary" and was also concerned about the number of Jews in Roosevelt's New Deal administration. Moreover, as late as 1958 he continued to distribute copies of the forged Protocols of the Elders of Zion to his political friends. Traditional Mormon religious sympathy seemed to have had little influence on his thinking about Jewish matters.