The letter added that the U.S. has learned “from credible public sources” that Al-Dawalibi “was a collaborator with the Hitler regime during World War II,” and spent the war years “as the personal secretary to Nazi collaborator Amin Al-Husseini, the former Mufti of Jerusalem.” Al-Dawalibi, the letter added, “was a known anti-Semite and served as an informer for Hitler’s security police.”