 In 1965 he founded the Appeal of Conscience Foundation as an “interfaith coalition of business and religious leaders” dedicated to promoting “peace, tolerance and ethnic conflict resolution.”

Throughout his career, Rabbi Schneier has actively advanced the cause of peace and tolerance.He is known for his efforts to rebuild Jewish and religious life in Russia after the collapse of the USSR and was instrumental in the return of the Moscow Synagogue to the Russian Jewish community.Rabbi Schneier has led 68 interfaith missions in China, Russia, Eastern Europe and Latin America.