In his sermons and talks calling “the development of American ideals” the first priority of Jews and “the Americanization of Americans” the best means to preserve our democracy against “Bolshevism, radicalism, and anarchism,” he frequently quoted from Theodore Roosevelt’s final message to the nation, in which the late president said, “There can be no divided allegiance here. Any man who says he is an American, but something else also, isn’t an American at all. We have room for but one flag, the American flag.”