Near the end of his career, he was a member of an external affairs committee that attended United Nations meetings at Lake Success.
Douglas's belief in an international financial Jewish conspiracy, and attempted to read excerpts from Protocols of the Elders of Zion into the Canadian parliamentary record.
[4] In private correspondence, he told a Saskatchewan resident that "the Jews control all means of gathering news and of propaganda".
[6] He was a vocal opponent of the creation of the State of Israel in 1947–48, and described Zionism as "a political movement ... to dominate the world".
Janine Stingel has written that Jaques, in common with other ideologues in his party, "was either unwilling or unable to separate anti-Zionism from anti-Semitism".
The Anti-Defamation League described Jaques as a "notorious anti-semite who has abused the privilege of entry into the United States by stirring up misunderstanding and tensions among racial and religious groups."